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COVID-19 in pregnancy tied to hypertension, preeclampsia
Having COVID-19 during pregnancy is linked to a significantly increased risk for gestational hypertension and preeclampsia compared with not having COVID-19 while pregnant, according to findings from a retrospective study presented Jan. 28 at the Society for Maternal-Fetal Medicine 2021 Annual Pregnancy Meeting.
“This was not entirely surprising given that inflammation has been implicated in the pathogenesis of both hypertensive disorders of pregnancy and COVID-19 infection and thus may serve to exacerbate each other,” Nigel Madden, MD, a resident physician in the ob.gyn. department at Columbia University, New York. , told this news organization after she presented the results.
Hypertensive disorders of pregnancy occur in 10%-15% of all pregnancies and are the leading cause of maternal and perinatal morbidity and mortality worldwide, Dr. Madden told attendees of the meeting. Although it’s not clear what causes hypertensive diseases in pregnancy generally, “it is possible that the acute inflammatory state of the COVID infection may incite or exacerbate hypertensive disease of pregnancy,” Dr. Madden said.
The researchers conducted a retrospective chart review of 1,715 patients who had a singleton pregnancy and who underwent routine nasal polymerase chain reaction testing at admission to one institution’s labor and delivery department between March and June 2020. The researchers excluded patients who had a history of chronic hypertension.
Overall, 10% of the patients tested positive for COVID-19 (n = 167), and 90% tested negative (n = 1,548). There were several differences at baseline between the groups. Those who tested positive tended to be younger, with an average age of 28, compared with an average age of 31 years for the group that tested negative. The group that tested negative also had a higher proportion of mothers aged 35 and older (P < .01). There were also significant differences in the racial makeup of the groups. Half of those in the COVID-positive group reported “other” for their race. The biggest baseline disparity between the groups was with regard to insurance type: 73% of those who tested positive for COVID-19 used Medicaid; only 36% of patients in the COVID-negative group used Medicaid. Those with private insurance were more likely to test negative (43%) than positive (25%) (P < .01).
The researchers defined gestational hypertension as having a systolic blood pressure greater than or equal to 140 mm Hg or a diastolic blood pressure greater than or equal to 90 mm Hg on two occasions at least 4 hours apart. A preeclampsia diagnosis required elevated blood pressure (using the same definition as for hypertension) as well as proteinuria, characterized by a protein/creatine ratio greater than or equal to 0.3 mg/dL or greater than or equal to 300 mg of protein on a 24-hour urine collection. Preeclampsia with severe features required prespecified laboratory abnormalities, pulmonary edema, or symptoms of headache, vision changes, chest pain, shortness of breath, or right upper quadrant pain.
More than twice as many patients with COVID had a hypertensive disorder of pregnancy (18%) as those who tested negative (8%). The patients who were COVID positive were significantly more likely than those who tested negative to have gestational hypertension and preeclampsia without severe features. Rates of preeclampsia with severe features were not significantly different between the groups.
The severity of hypertensive disease did not differ between the groups. Limitations of the study included its retrospective design, the small number of COVID-positive patients, and the fact that it was conducted at a single institution in New York. However, the study population was diverse, and it was conducted during the height of infections at the epicenter of the COVID-19 pandemic.
“This was a study of great clinical significance,” said Kim Boggess, MD, of the University of North Carolina at Chapel Hill, while moderating the session. “I would argue that you guys in New York are the best poised to answer some of the questions that need to be answered as it relates to the effect of coronavirus infection in pregnancy.”
Dr. Boggess asked whether the study examined associations related to the severity of COVID-19. Only 10 of the patients were symptomatic, Dr. Madden said, and only one of those patients developed preeclampsia with severe features.
Michelle Y. Owens, MD, professor and chief of maternal fetal medicine at the University of Mississippi Medical Center, Jackson, who also moderated the session, said in an interview that the findings call for physicians to remain vigilant about evaluating patients who test positive for COVID-19 for hypertensive disease and disorders.
“Additionally, these women should be educated about hypertensive disorders and the common symptoms to facilitate early diagnosis and treatment when indicated,” Dr. Owens said. “I believe this is of particular interest in those women who are not severely affected by COVID, as these changes may occur while they are undergoing quarantine or being monitored remotely. This amplifies the need for remote assessment or home monitoring of maternal blood pressures.”
Dr. Madden, Dr. Boggess, and Dr. Owens have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Having COVID-19 during pregnancy is linked to a significantly increased risk for gestational hypertension and preeclampsia compared with not having COVID-19 while pregnant, according to findings from a retrospective study presented Jan. 28 at the Society for Maternal-Fetal Medicine 2021 Annual Pregnancy Meeting.
“This was not entirely surprising given that inflammation has been implicated in the pathogenesis of both hypertensive disorders of pregnancy and COVID-19 infection and thus may serve to exacerbate each other,” Nigel Madden, MD, a resident physician in the ob.gyn. department at Columbia University, New York. , told this news organization after she presented the results.
Hypertensive disorders of pregnancy occur in 10%-15% of all pregnancies and are the leading cause of maternal and perinatal morbidity and mortality worldwide, Dr. Madden told attendees of the meeting. Although it’s not clear what causes hypertensive diseases in pregnancy generally, “it is possible that the acute inflammatory state of the COVID infection may incite or exacerbate hypertensive disease of pregnancy,” Dr. Madden said.
The researchers conducted a retrospective chart review of 1,715 patients who had a singleton pregnancy and who underwent routine nasal polymerase chain reaction testing at admission to one institution’s labor and delivery department between March and June 2020. The researchers excluded patients who had a history of chronic hypertension.
Overall, 10% of the patients tested positive for COVID-19 (n = 167), and 90% tested negative (n = 1,548). There were several differences at baseline between the groups. Those who tested positive tended to be younger, with an average age of 28, compared with an average age of 31 years for the group that tested negative. The group that tested negative also had a higher proportion of mothers aged 35 and older (P < .01). There were also significant differences in the racial makeup of the groups. Half of those in the COVID-positive group reported “other” for their race. The biggest baseline disparity between the groups was with regard to insurance type: 73% of those who tested positive for COVID-19 used Medicaid; only 36% of patients in the COVID-negative group used Medicaid. Those with private insurance were more likely to test negative (43%) than positive (25%) (P < .01).
The researchers defined gestational hypertension as having a systolic blood pressure greater than or equal to 140 mm Hg or a diastolic blood pressure greater than or equal to 90 mm Hg on two occasions at least 4 hours apart. A preeclampsia diagnosis required elevated blood pressure (using the same definition as for hypertension) as well as proteinuria, characterized by a protein/creatine ratio greater than or equal to 0.3 mg/dL or greater than or equal to 300 mg of protein on a 24-hour urine collection. Preeclampsia with severe features required prespecified laboratory abnormalities, pulmonary edema, or symptoms of headache, vision changes, chest pain, shortness of breath, or right upper quadrant pain.
More than twice as many patients with COVID had a hypertensive disorder of pregnancy (18%) as those who tested negative (8%). The patients who were COVID positive were significantly more likely than those who tested negative to have gestational hypertension and preeclampsia without severe features. Rates of preeclampsia with severe features were not significantly different between the groups.
The severity of hypertensive disease did not differ between the groups. Limitations of the study included its retrospective design, the small number of COVID-positive patients, and the fact that it was conducted at a single institution in New York. However, the study population was diverse, and it was conducted during the height of infections at the epicenter of the COVID-19 pandemic.
“This was a study of great clinical significance,” said Kim Boggess, MD, of the University of North Carolina at Chapel Hill, while moderating the session. “I would argue that you guys in New York are the best poised to answer some of the questions that need to be answered as it relates to the effect of coronavirus infection in pregnancy.”
Dr. Boggess asked whether the study examined associations related to the severity of COVID-19. Only 10 of the patients were symptomatic, Dr. Madden said, and only one of those patients developed preeclampsia with severe features.
Michelle Y. Owens, MD, professor and chief of maternal fetal medicine at the University of Mississippi Medical Center, Jackson, who also moderated the session, said in an interview that the findings call for physicians to remain vigilant about evaluating patients who test positive for COVID-19 for hypertensive disease and disorders.
“Additionally, these women should be educated about hypertensive disorders and the common symptoms to facilitate early diagnosis and treatment when indicated,” Dr. Owens said. “I believe this is of particular interest in those women who are not severely affected by COVID, as these changes may occur while they are undergoing quarantine or being monitored remotely. This amplifies the need for remote assessment or home monitoring of maternal blood pressures.”
Dr. Madden, Dr. Boggess, and Dr. Owens have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Having COVID-19 during pregnancy is linked to a significantly increased risk for gestational hypertension and preeclampsia compared with not having COVID-19 while pregnant, according to findings from a retrospective study presented Jan. 28 at the Society for Maternal-Fetal Medicine 2021 Annual Pregnancy Meeting.
“This was not entirely surprising given that inflammation has been implicated in the pathogenesis of both hypertensive disorders of pregnancy and COVID-19 infection and thus may serve to exacerbate each other,” Nigel Madden, MD, a resident physician in the ob.gyn. department at Columbia University, New York. , told this news organization after she presented the results.
Hypertensive disorders of pregnancy occur in 10%-15% of all pregnancies and are the leading cause of maternal and perinatal morbidity and mortality worldwide, Dr. Madden told attendees of the meeting. Although it’s not clear what causes hypertensive diseases in pregnancy generally, “it is possible that the acute inflammatory state of the COVID infection may incite or exacerbate hypertensive disease of pregnancy,” Dr. Madden said.
The researchers conducted a retrospective chart review of 1,715 patients who had a singleton pregnancy and who underwent routine nasal polymerase chain reaction testing at admission to one institution’s labor and delivery department between March and June 2020. The researchers excluded patients who had a history of chronic hypertension.
Overall, 10% of the patients tested positive for COVID-19 (n = 167), and 90% tested negative (n = 1,548). There were several differences at baseline between the groups. Those who tested positive tended to be younger, with an average age of 28, compared with an average age of 31 years for the group that tested negative. The group that tested negative also had a higher proportion of mothers aged 35 and older (P < .01). There were also significant differences in the racial makeup of the groups. Half of those in the COVID-positive group reported “other” for their race. The biggest baseline disparity between the groups was with regard to insurance type: 73% of those who tested positive for COVID-19 used Medicaid; only 36% of patients in the COVID-negative group used Medicaid. Those with private insurance were more likely to test negative (43%) than positive (25%) (P < .01).
The researchers defined gestational hypertension as having a systolic blood pressure greater than or equal to 140 mm Hg or a diastolic blood pressure greater than or equal to 90 mm Hg on two occasions at least 4 hours apart. A preeclampsia diagnosis required elevated blood pressure (using the same definition as for hypertension) as well as proteinuria, characterized by a protein/creatine ratio greater than or equal to 0.3 mg/dL or greater than or equal to 300 mg of protein on a 24-hour urine collection. Preeclampsia with severe features required prespecified laboratory abnormalities, pulmonary edema, or symptoms of headache, vision changes, chest pain, shortness of breath, or right upper quadrant pain.
More than twice as many patients with COVID had a hypertensive disorder of pregnancy (18%) as those who tested negative (8%). The patients who were COVID positive were significantly more likely than those who tested negative to have gestational hypertension and preeclampsia without severe features. Rates of preeclampsia with severe features were not significantly different between the groups.
The severity of hypertensive disease did not differ between the groups. Limitations of the study included its retrospective design, the small number of COVID-positive patients, and the fact that it was conducted at a single institution in New York. However, the study population was diverse, and it was conducted during the height of infections at the epicenter of the COVID-19 pandemic.
“This was a study of great clinical significance,” said Kim Boggess, MD, of the University of North Carolina at Chapel Hill, while moderating the session. “I would argue that you guys in New York are the best poised to answer some of the questions that need to be answered as it relates to the effect of coronavirus infection in pregnancy.”
Dr. Boggess asked whether the study examined associations related to the severity of COVID-19. Only 10 of the patients were symptomatic, Dr. Madden said, and only one of those patients developed preeclampsia with severe features.
Michelle Y. Owens, MD, professor and chief of maternal fetal medicine at the University of Mississippi Medical Center, Jackson, who also moderated the session, said in an interview that the findings call for physicians to remain vigilant about evaluating patients who test positive for COVID-19 for hypertensive disease and disorders.
“Additionally, these women should be educated about hypertensive disorders and the common symptoms to facilitate early diagnosis and treatment when indicated,” Dr. Owens said. “I believe this is of particular interest in those women who are not severely affected by COVID, as these changes may occur while they are undergoing quarantine or being monitored remotely. This amplifies the need for remote assessment or home monitoring of maternal blood pressures.”
Dr. Madden, Dr. Boggess, and Dr. Owens have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FDA approves intramuscular administration for peginterferon beta-1a in MS
“The new IM administration offers people living with relapsing MS the well-characterized efficacy and safety of Plegridy with the potential for significantly reduced injection site reactions,” Biogen said in a news release announcing the FDA action.
Plegridy is a pegylated version of interferon beta-1a, which prolongs the circulation time of the molecule in the body by increasing its size. The process extends the drug’s half-life, allowing for a less-frequent dosing schedule.
Peginterferon beta-1a administered subcutaneously was first approved by the FDA in 2014 based on data showing it significantly reduces MS relapses, disability progression, and brain lesions.
The FDA approved IM administration for peginterferon beta-1a based on data evaluating bioequivalence and adverse reactions associated with IM administration compared with subcutaneous (SC) administration in healthy volunteers.
Bioequivalence of the IM and SC dosing regimens was confirmed and volunteers receiving the drug through IM administration experienced fewer injection site reactions relative to those receiving SC administration (14.4% vs. 32.1%), the company said.
The overall safety profiles of IM and SC administration were generally similar, with no new safety signals.
The European Commission allowed marketing authorization for IM administration of peginterferon beta-1a in December 2020.
A version of this article first appeared on Medscape.com.
“The new IM administration offers people living with relapsing MS the well-characterized efficacy and safety of Plegridy with the potential for significantly reduced injection site reactions,” Biogen said in a news release announcing the FDA action.
Plegridy is a pegylated version of interferon beta-1a, which prolongs the circulation time of the molecule in the body by increasing its size. The process extends the drug’s half-life, allowing for a less-frequent dosing schedule.
Peginterferon beta-1a administered subcutaneously was first approved by the FDA in 2014 based on data showing it significantly reduces MS relapses, disability progression, and brain lesions.
The FDA approved IM administration for peginterferon beta-1a based on data evaluating bioequivalence and adverse reactions associated with IM administration compared with subcutaneous (SC) administration in healthy volunteers.
Bioequivalence of the IM and SC dosing regimens was confirmed and volunteers receiving the drug through IM administration experienced fewer injection site reactions relative to those receiving SC administration (14.4% vs. 32.1%), the company said.
The overall safety profiles of IM and SC administration were generally similar, with no new safety signals.
The European Commission allowed marketing authorization for IM administration of peginterferon beta-1a in December 2020.
A version of this article first appeared on Medscape.com.
“The new IM administration offers people living with relapsing MS the well-characterized efficacy and safety of Plegridy with the potential for significantly reduced injection site reactions,” Biogen said in a news release announcing the FDA action.
Plegridy is a pegylated version of interferon beta-1a, which prolongs the circulation time of the molecule in the body by increasing its size. The process extends the drug’s half-life, allowing for a less-frequent dosing schedule.
Peginterferon beta-1a administered subcutaneously was first approved by the FDA in 2014 based on data showing it significantly reduces MS relapses, disability progression, and brain lesions.
The FDA approved IM administration for peginterferon beta-1a based on data evaluating bioequivalence and adverse reactions associated with IM administration compared with subcutaneous (SC) administration in healthy volunteers.
Bioequivalence of the IM and SC dosing regimens was confirmed and volunteers receiving the drug through IM administration experienced fewer injection site reactions relative to those receiving SC administration (14.4% vs. 32.1%), the company said.
The overall safety profiles of IM and SC administration were generally similar, with no new safety signals.
The European Commission allowed marketing authorization for IM administration of peginterferon beta-1a in December 2020.
A version of this article first appeared on Medscape.com.
Severe Refractory Hailey-Hailey Disease Treated With Electron Beam Radiotherapy and Low-Level Laser Therapy
To the Editor:
Hailey-Hailey disease (HHD), or familial benign chronic pemphigus, is a genetic disorder caused by an autosomal-dominant mutation in ATPase secretory pathway Ca2+ transporting 1 gene, ATP2C1, which disrupts intracellular calcium signaling and blocks synthesis of junctional proteins required for cell-cell adhesion.1,2 As a result, patients develop acantholysis of the suprabasilar epidermis resulting in chronic flaccid blisters and erosions, particularly in intertriginous areas.3 Patients often report associated itching, pain, and burning, and they frequently present with secondary polymicrobial infections.4 Although HHD is genetic, patients may present without a family history due to variable expressivity and sporadic germline mutations.5 Therapeutic options are numerous, and patients may attempt many treatments before a benefit is observed.4 Local disease improvement was noted in a case series of 3 patients treated with electron beam radiotherapy with no disease recurrence in treated sites at 38, 33, and 9 months’ follow-up.6 Herein, we present a case of HHD refractory to numerous prior therapies that was successfully treated with electron beam radiotherapy, highlighting the potential role for palliative radiotherapy in select refractory cases of HHD.
A 35-year-old woman with a 7-year of history of HHD presented with severe recalcitrant disease including extensive erosive patches and plaques in the intertriginous areas of the bilateral axillae, groin, and inframammary folds (Figure 1). The skin eruptions first appeared at 28 years of age after her last pregnancy and continued as painful blistering that worsened with each menstrual cycle. Initially the affected desquamated skin would heal between menstrual cycles, but large areas of desquamation remained unhealed in the groin and inframammary regions throughout her full menstrual cycles by the time of referral. Family history included 4 family members with HHD: 2 aunts, an uncle, and a cousin on the paternal side of her family. Over a 7-year period, treatment with clobetasol cream, clindamycin gel, tacrolimus ointment, doxycycline, dapsone, cyclosporine, methotrexate, etanercept, isotretinoin, and prednisone (15 mg every other day) all failed. Most recently, axillary abobotulinumtoxinA injections were attempted but failed. She had been prednisone dependent for more than 1 year. Due to the ongoing refractory disease, she was referred to radiation oncology to discuss radiotherapy treatment options.
At the time of presentation to the radiation oncology clinic, she continued to have extensive involvement of the intertriginous areas as well as involvement of the right neck at sites of skin chafing from clothing. Consistent with the limited available evidence, a dose of 20 Gy in 10 fractions was first prescribed to the axillae to assess response in the event of radiosensitivity, resulting in brisk desquamation. The conventional fractionation of 2 Gy per fraction allowed for assessment of response/tolerance and the opportunity to stop the treatment in the unlikely event of a severe skin reaction. Her skin tolerated treatment well with slight dryness and mild irritation that was less severe than the typical HHD flares. Concurrently with the axillary radiotherapy, we delivered a trial of low-level laser therapy to areas of severe disease in both inguinal regions in the hope that it could be used instead of radiotherapy to avoid any associated risks of radiation. Low-level laser therapy was administered with a light-emitting diode cluster probe at 2.5 Hz for 1 minute to 2 sites in each inguinal area daily for a total of 10 treatments. Unfortunately, this therapy temporarily exacerbated exudation present in the skin before it resolved to its pretreatment state with no improvement.
One month after treatment she had total resolution of the erosive patches and plaques with mild residual hyperpigmentation in the axillae, establishing that radiation therapy was reasonably effective. To lower the total radiation dose and decrease the risk of radiation-induced malignancy, we treated the bilateral groin and the inframammary region with a treatment schedule of 8 Gy in 2 fractions at a higher dose of 4 Gy per fraction instead of 2 Gy. At 12 days posttreatment, she had a dramatic response in the groin and a mixed response in the inframammary region, with a focus that had not yet regressed. Given the dramatic response in the treated sites, the patient requested treatment to the right side of the neck. Thus, we treated this area with a similar 8 Gy in 2 fractions, and an additional 6 Gy in 2 fractions boost was added to the slow responding focus in the inframammary fold for a total of 14 Gy in 4 fractions. The patient tolerated all treatments well with mild grade 1 skin irritation that was unlike the blistering of the typical HHD flares. Two months following completion of the first course of radiotherapy to the axillae and 2 weeks from the most recent course, she tapered off her prednisone regimen (15 mg every other day) but had a relapse of disease with her subsequent menstrual cycles that presented as a blistering skin reaction in the inframammary region, which healed in response to restarting steroids. This flare was less severe than those prior to radiotherapy. At 10 months posttreatment, the patient was free of disease in the neck and axillae (Figure 2). She continued to have relapses in the inframammary region with menstrual cycles and noted new disease in the popliteal regions; however, the relapses were less severe, and her skin had improved more with radiation than any of the prior therapies.
Our experience with low-level laser therapy indicated that it should be completely avoided in HHD. Our patient’s treatment with radiotherapy demonstrated excellent short-term responses in areas of pemphigus but later proved to be a mixed response with further follow-up including a mild posttreatment flare of the inframammary region that responded to steroids and new popliteal region involvement. As summarized in the Table, earlier reports of radiotherapy for the treatment of HHD have yielded varied results.6-8 The mixed response seen in our patient suggests that response to radiotherapy may be site specific, related to underlying inflammation from microbial overgrowth, or a function of the disease severity.
Although the number of reports on radiotherapy in HHD is small, there have been several reports of Darier disease, another acantholytic autosomal-dominant genodermatosis affecting the ATP2A2 gene, successfully treated incidentally with radiation.9,10 Total skin electron beam therapy also has been employed in the treatment of Darier disease; this patient experienced a severe flare after a relatively low treatment dose that required intensive care monitoring, possibly highlighting the potential radiosensitivity of patients with underlying genodermatoses and cautioning against radiotherapy dose escalation.11 In light of the mixed responses seen, radiation therapy should be used sparingly for severe relapsing cases that have failed a plethora of prior treatments. The risk of second cancer induction is especially of concern when using radiotherapy in a benign disease.12 We observed excellent initial responses in our patient, both with conventionally fractionated radiotherapy and hypofractionation. The risk of second malignancy induction is a linear function of radiotherapy dose.12 Thus, utilization of hypofractionated regimens such as 4 Gy times 2 fractions seems most prudent. It remains unclear if further dose de-escalation may yield a similar response, as seen in studies utilizing radiotherapy for other benign disease.13,14 Overall, given our mixed results with short follow-up, we conclude that the consideration of radiotherapy should be limited to patients with severe recalcitrant HHD.
- Dhitavat J, Fairclough RJ, Hovnanian A, et al. Calcium pumps and keratinocytes: lessons from Darier’s disease and Hailey-Hailey disease. Br J Dermatol. 2004;150:821-828.
- Hu Z, Bonifas JM, Beech J, et al. Mutations in ATP2C1, encoding a calcium pump, cause Hailey-Hailey disease. Nat Genet. 2000;24:61-65.
- Burge SM. Hailey-Hailey disease: the clinical features, response to treatment and prognosis. Br J Dermatol. 1992;126:275-282.
- Chiaravalloti A, Payette M. Hailey-Hailey disease and review of management. J Drugs Dermatol. 2014;13:1254-1257.
- Zhang F, Yan X, Jiang D, et al. Eight novel mutations of ATP2C1 identified in 17 Chinese families with Hailey-Hailey disease. Dermatology. 2007;215:277-283.
- Narbutt J, Chrusciel A, Rychter A, et al. Persistent improvement of previously recalcitrant Hailey-Hailey disease with electron beam radiotherapy. Acta Derm Venereol. 2010;90:179-182.
- Sarkany I. Grenz-ray treatment of familial benign chronic pemphigus. Br J Dermatol. 1959;71:247-252.
- Roos DE, Reid CM. Benign familial pemphigus: little benefit from superficial radiotherapy. Australas J Dermatol. 2002;43:305-308.
- Podgornii A, Ciammella P, Ramundo D, et al. Efficacy of the radiotherapy on Darier’s disease: an indirect evidence. Case Rep Dermatol Med. 2013;2013:907802.
- Mac Manus MP, Cavalleri G, Ball DL, et al. Exacerbation, then clearance, of mutation-proven Darier’s disease of the skin after radiotherapy for bronchial carcinoma: a case of radiation-induced epidermal differentiation? Radiat Res. 2001;156:724-730.
- Kittridge A, Wahlgren C, Fuhrer R, et al. Treatment of recalcitrant Darier’s disease with electron beam therapy. Dermatol Ther. 2010;23:302-304.
- Preston DL, Shimizu Y, Pierce DA, et al. Studies of mortality of atomic bomb survivors. report 13: solid cancer and noncancer disease mortality: 1950-1997. Radiat Res. 2003;160:381-407.
- Fröhlich D, Baaske D, Glatzel M. Radiotherapy of hidradenitis suppurativa—still valid today? [in German]. Strahlenther Onkol. 2000;176:286-289.
- Heyd R, Tselis N, Ackermann H, et al. Radiation therapy for painful heel spurs: results of a prospective randomized study. Strahlenther Onkol. 2007;183:3-9.
To the Editor:
Hailey-Hailey disease (HHD), or familial benign chronic pemphigus, is a genetic disorder caused by an autosomal-dominant mutation in ATPase secretory pathway Ca2+ transporting 1 gene, ATP2C1, which disrupts intracellular calcium signaling and blocks synthesis of junctional proteins required for cell-cell adhesion.1,2 As a result, patients develop acantholysis of the suprabasilar epidermis resulting in chronic flaccid blisters and erosions, particularly in intertriginous areas.3 Patients often report associated itching, pain, and burning, and they frequently present with secondary polymicrobial infections.4 Although HHD is genetic, patients may present without a family history due to variable expressivity and sporadic germline mutations.5 Therapeutic options are numerous, and patients may attempt many treatments before a benefit is observed.4 Local disease improvement was noted in a case series of 3 patients treated with electron beam radiotherapy with no disease recurrence in treated sites at 38, 33, and 9 months’ follow-up.6 Herein, we present a case of HHD refractory to numerous prior therapies that was successfully treated with electron beam radiotherapy, highlighting the potential role for palliative radiotherapy in select refractory cases of HHD.
A 35-year-old woman with a 7-year of history of HHD presented with severe recalcitrant disease including extensive erosive patches and plaques in the intertriginous areas of the bilateral axillae, groin, and inframammary folds (Figure 1). The skin eruptions first appeared at 28 years of age after her last pregnancy and continued as painful blistering that worsened with each menstrual cycle. Initially the affected desquamated skin would heal between menstrual cycles, but large areas of desquamation remained unhealed in the groin and inframammary regions throughout her full menstrual cycles by the time of referral. Family history included 4 family members with HHD: 2 aunts, an uncle, and a cousin on the paternal side of her family. Over a 7-year period, treatment with clobetasol cream, clindamycin gel, tacrolimus ointment, doxycycline, dapsone, cyclosporine, methotrexate, etanercept, isotretinoin, and prednisone (15 mg every other day) all failed. Most recently, axillary abobotulinumtoxinA injections were attempted but failed. She had been prednisone dependent for more than 1 year. Due to the ongoing refractory disease, she was referred to radiation oncology to discuss radiotherapy treatment options.
At the time of presentation to the radiation oncology clinic, she continued to have extensive involvement of the intertriginous areas as well as involvement of the right neck at sites of skin chafing from clothing. Consistent with the limited available evidence, a dose of 20 Gy in 10 fractions was first prescribed to the axillae to assess response in the event of radiosensitivity, resulting in brisk desquamation. The conventional fractionation of 2 Gy per fraction allowed for assessment of response/tolerance and the opportunity to stop the treatment in the unlikely event of a severe skin reaction. Her skin tolerated treatment well with slight dryness and mild irritation that was less severe than the typical HHD flares. Concurrently with the axillary radiotherapy, we delivered a trial of low-level laser therapy to areas of severe disease in both inguinal regions in the hope that it could be used instead of radiotherapy to avoid any associated risks of radiation. Low-level laser therapy was administered with a light-emitting diode cluster probe at 2.5 Hz for 1 minute to 2 sites in each inguinal area daily for a total of 10 treatments. Unfortunately, this therapy temporarily exacerbated exudation present in the skin before it resolved to its pretreatment state with no improvement.
One month after treatment she had total resolution of the erosive patches and plaques with mild residual hyperpigmentation in the axillae, establishing that radiation therapy was reasonably effective. To lower the total radiation dose and decrease the risk of radiation-induced malignancy, we treated the bilateral groin and the inframammary region with a treatment schedule of 8 Gy in 2 fractions at a higher dose of 4 Gy per fraction instead of 2 Gy. At 12 days posttreatment, she had a dramatic response in the groin and a mixed response in the inframammary region, with a focus that had not yet regressed. Given the dramatic response in the treated sites, the patient requested treatment to the right side of the neck. Thus, we treated this area with a similar 8 Gy in 2 fractions, and an additional 6 Gy in 2 fractions boost was added to the slow responding focus in the inframammary fold for a total of 14 Gy in 4 fractions. The patient tolerated all treatments well with mild grade 1 skin irritation that was unlike the blistering of the typical HHD flares. Two months following completion of the first course of radiotherapy to the axillae and 2 weeks from the most recent course, she tapered off her prednisone regimen (15 mg every other day) but had a relapse of disease with her subsequent menstrual cycles that presented as a blistering skin reaction in the inframammary region, which healed in response to restarting steroids. This flare was less severe than those prior to radiotherapy. At 10 months posttreatment, the patient was free of disease in the neck and axillae (Figure 2). She continued to have relapses in the inframammary region with menstrual cycles and noted new disease in the popliteal regions; however, the relapses were less severe, and her skin had improved more with radiation than any of the prior therapies.
Our experience with low-level laser therapy indicated that it should be completely avoided in HHD. Our patient’s treatment with radiotherapy demonstrated excellent short-term responses in areas of pemphigus but later proved to be a mixed response with further follow-up including a mild posttreatment flare of the inframammary region that responded to steroids and new popliteal region involvement. As summarized in the Table, earlier reports of radiotherapy for the treatment of HHD have yielded varied results.6-8 The mixed response seen in our patient suggests that response to radiotherapy may be site specific, related to underlying inflammation from microbial overgrowth, or a function of the disease severity.
Although the number of reports on radiotherapy in HHD is small, there have been several reports of Darier disease, another acantholytic autosomal-dominant genodermatosis affecting the ATP2A2 gene, successfully treated incidentally with radiation.9,10 Total skin electron beam therapy also has been employed in the treatment of Darier disease; this patient experienced a severe flare after a relatively low treatment dose that required intensive care monitoring, possibly highlighting the potential radiosensitivity of patients with underlying genodermatoses and cautioning against radiotherapy dose escalation.11 In light of the mixed responses seen, radiation therapy should be used sparingly for severe relapsing cases that have failed a plethora of prior treatments. The risk of second cancer induction is especially of concern when using radiotherapy in a benign disease.12 We observed excellent initial responses in our patient, both with conventionally fractionated radiotherapy and hypofractionation. The risk of second malignancy induction is a linear function of radiotherapy dose.12 Thus, utilization of hypofractionated regimens such as 4 Gy times 2 fractions seems most prudent. It remains unclear if further dose de-escalation may yield a similar response, as seen in studies utilizing radiotherapy for other benign disease.13,14 Overall, given our mixed results with short follow-up, we conclude that the consideration of radiotherapy should be limited to patients with severe recalcitrant HHD.
To the Editor:
Hailey-Hailey disease (HHD), or familial benign chronic pemphigus, is a genetic disorder caused by an autosomal-dominant mutation in ATPase secretory pathway Ca2+ transporting 1 gene, ATP2C1, which disrupts intracellular calcium signaling and blocks synthesis of junctional proteins required for cell-cell adhesion.1,2 As a result, patients develop acantholysis of the suprabasilar epidermis resulting in chronic flaccid blisters and erosions, particularly in intertriginous areas.3 Patients often report associated itching, pain, and burning, and they frequently present with secondary polymicrobial infections.4 Although HHD is genetic, patients may present without a family history due to variable expressivity and sporadic germline mutations.5 Therapeutic options are numerous, and patients may attempt many treatments before a benefit is observed.4 Local disease improvement was noted in a case series of 3 patients treated with electron beam radiotherapy with no disease recurrence in treated sites at 38, 33, and 9 months’ follow-up.6 Herein, we present a case of HHD refractory to numerous prior therapies that was successfully treated with electron beam radiotherapy, highlighting the potential role for palliative radiotherapy in select refractory cases of HHD.
A 35-year-old woman with a 7-year of history of HHD presented with severe recalcitrant disease including extensive erosive patches and plaques in the intertriginous areas of the bilateral axillae, groin, and inframammary folds (Figure 1). The skin eruptions first appeared at 28 years of age after her last pregnancy and continued as painful blistering that worsened with each menstrual cycle. Initially the affected desquamated skin would heal between menstrual cycles, but large areas of desquamation remained unhealed in the groin and inframammary regions throughout her full menstrual cycles by the time of referral. Family history included 4 family members with HHD: 2 aunts, an uncle, and a cousin on the paternal side of her family. Over a 7-year period, treatment with clobetasol cream, clindamycin gel, tacrolimus ointment, doxycycline, dapsone, cyclosporine, methotrexate, etanercept, isotretinoin, and prednisone (15 mg every other day) all failed. Most recently, axillary abobotulinumtoxinA injections were attempted but failed. She had been prednisone dependent for more than 1 year. Due to the ongoing refractory disease, she was referred to radiation oncology to discuss radiotherapy treatment options.
At the time of presentation to the radiation oncology clinic, she continued to have extensive involvement of the intertriginous areas as well as involvement of the right neck at sites of skin chafing from clothing. Consistent with the limited available evidence, a dose of 20 Gy in 10 fractions was first prescribed to the axillae to assess response in the event of radiosensitivity, resulting in brisk desquamation. The conventional fractionation of 2 Gy per fraction allowed for assessment of response/tolerance and the opportunity to stop the treatment in the unlikely event of a severe skin reaction. Her skin tolerated treatment well with slight dryness and mild irritation that was less severe than the typical HHD flares. Concurrently with the axillary radiotherapy, we delivered a trial of low-level laser therapy to areas of severe disease in both inguinal regions in the hope that it could be used instead of radiotherapy to avoid any associated risks of radiation. Low-level laser therapy was administered with a light-emitting diode cluster probe at 2.5 Hz for 1 minute to 2 sites in each inguinal area daily for a total of 10 treatments. Unfortunately, this therapy temporarily exacerbated exudation present in the skin before it resolved to its pretreatment state with no improvement.
One month after treatment she had total resolution of the erosive patches and plaques with mild residual hyperpigmentation in the axillae, establishing that radiation therapy was reasonably effective. To lower the total radiation dose and decrease the risk of radiation-induced malignancy, we treated the bilateral groin and the inframammary region with a treatment schedule of 8 Gy in 2 fractions at a higher dose of 4 Gy per fraction instead of 2 Gy. At 12 days posttreatment, she had a dramatic response in the groin and a mixed response in the inframammary region, with a focus that had not yet regressed. Given the dramatic response in the treated sites, the patient requested treatment to the right side of the neck. Thus, we treated this area with a similar 8 Gy in 2 fractions, and an additional 6 Gy in 2 fractions boost was added to the slow responding focus in the inframammary fold for a total of 14 Gy in 4 fractions. The patient tolerated all treatments well with mild grade 1 skin irritation that was unlike the blistering of the typical HHD flares. Two months following completion of the first course of radiotherapy to the axillae and 2 weeks from the most recent course, she tapered off her prednisone regimen (15 mg every other day) but had a relapse of disease with her subsequent menstrual cycles that presented as a blistering skin reaction in the inframammary region, which healed in response to restarting steroids. This flare was less severe than those prior to radiotherapy. At 10 months posttreatment, the patient was free of disease in the neck and axillae (Figure 2). She continued to have relapses in the inframammary region with menstrual cycles and noted new disease in the popliteal regions; however, the relapses were less severe, and her skin had improved more with radiation than any of the prior therapies.
Our experience with low-level laser therapy indicated that it should be completely avoided in HHD. Our patient’s treatment with radiotherapy demonstrated excellent short-term responses in areas of pemphigus but later proved to be a mixed response with further follow-up including a mild posttreatment flare of the inframammary region that responded to steroids and new popliteal region involvement. As summarized in the Table, earlier reports of radiotherapy for the treatment of HHD have yielded varied results.6-8 The mixed response seen in our patient suggests that response to radiotherapy may be site specific, related to underlying inflammation from microbial overgrowth, or a function of the disease severity.
Although the number of reports on radiotherapy in HHD is small, there have been several reports of Darier disease, another acantholytic autosomal-dominant genodermatosis affecting the ATP2A2 gene, successfully treated incidentally with radiation.9,10 Total skin electron beam therapy also has been employed in the treatment of Darier disease; this patient experienced a severe flare after a relatively low treatment dose that required intensive care monitoring, possibly highlighting the potential radiosensitivity of patients with underlying genodermatoses and cautioning against radiotherapy dose escalation.11 In light of the mixed responses seen, radiation therapy should be used sparingly for severe relapsing cases that have failed a plethora of prior treatments. The risk of second cancer induction is especially of concern when using radiotherapy in a benign disease.12 We observed excellent initial responses in our patient, both with conventionally fractionated radiotherapy and hypofractionation. The risk of second malignancy induction is a linear function of radiotherapy dose.12 Thus, utilization of hypofractionated regimens such as 4 Gy times 2 fractions seems most prudent. It remains unclear if further dose de-escalation may yield a similar response, as seen in studies utilizing radiotherapy for other benign disease.13,14 Overall, given our mixed results with short follow-up, we conclude that the consideration of radiotherapy should be limited to patients with severe recalcitrant HHD.
- Dhitavat J, Fairclough RJ, Hovnanian A, et al. Calcium pumps and keratinocytes: lessons from Darier’s disease and Hailey-Hailey disease. Br J Dermatol. 2004;150:821-828.
- Hu Z, Bonifas JM, Beech J, et al. Mutations in ATP2C1, encoding a calcium pump, cause Hailey-Hailey disease. Nat Genet. 2000;24:61-65.
- Burge SM. Hailey-Hailey disease: the clinical features, response to treatment and prognosis. Br J Dermatol. 1992;126:275-282.
- Chiaravalloti A, Payette M. Hailey-Hailey disease and review of management. J Drugs Dermatol. 2014;13:1254-1257.
- Zhang F, Yan X, Jiang D, et al. Eight novel mutations of ATP2C1 identified in 17 Chinese families with Hailey-Hailey disease. Dermatology. 2007;215:277-283.
- Narbutt J, Chrusciel A, Rychter A, et al. Persistent improvement of previously recalcitrant Hailey-Hailey disease with electron beam radiotherapy. Acta Derm Venereol. 2010;90:179-182.
- Sarkany I. Grenz-ray treatment of familial benign chronic pemphigus. Br J Dermatol. 1959;71:247-252.
- Roos DE, Reid CM. Benign familial pemphigus: little benefit from superficial radiotherapy. Australas J Dermatol. 2002;43:305-308.
- Podgornii A, Ciammella P, Ramundo D, et al. Efficacy of the radiotherapy on Darier’s disease: an indirect evidence. Case Rep Dermatol Med. 2013;2013:907802.
- Mac Manus MP, Cavalleri G, Ball DL, et al. Exacerbation, then clearance, of mutation-proven Darier’s disease of the skin after radiotherapy for bronchial carcinoma: a case of radiation-induced epidermal differentiation? Radiat Res. 2001;156:724-730.
- Kittridge A, Wahlgren C, Fuhrer R, et al. Treatment of recalcitrant Darier’s disease with electron beam therapy. Dermatol Ther. 2010;23:302-304.
- Preston DL, Shimizu Y, Pierce DA, et al. Studies of mortality of atomic bomb survivors. report 13: solid cancer and noncancer disease mortality: 1950-1997. Radiat Res. 2003;160:381-407.
- Fröhlich D, Baaske D, Glatzel M. Radiotherapy of hidradenitis suppurativa—still valid today? [in German]. Strahlenther Onkol. 2000;176:286-289.
- Heyd R, Tselis N, Ackermann H, et al. Radiation therapy for painful heel spurs: results of a prospective randomized study. Strahlenther Onkol. 2007;183:3-9.
- Dhitavat J, Fairclough RJ, Hovnanian A, et al. Calcium pumps and keratinocytes: lessons from Darier’s disease and Hailey-Hailey disease. Br J Dermatol. 2004;150:821-828.
- Hu Z, Bonifas JM, Beech J, et al. Mutations in ATP2C1, encoding a calcium pump, cause Hailey-Hailey disease. Nat Genet. 2000;24:61-65.
- Burge SM. Hailey-Hailey disease: the clinical features, response to treatment and prognosis. Br J Dermatol. 1992;126:275-282.
- Chiaravalloti A, Payette M. Hailey-Hailey disease and review of management. J Drugs Dermatol. 2014;13:1254-1257.
- Zhang F, Yan X, Jiang D, et al. Eight novel mutations of ATP2C1 identified in 17 Chinese families with Hailey-Hailey disease. Dermatology. 2007;215:277-283.
- Narbutt J, Chrusciel A, Rychter A, et al. Persistent improvement of previously recalcitrant Hailey-Hailey disease with electron beam radiotherapy. Acta Derm Venereol. 2010;90:179-182.
- Sarkany I. Grenz-ray treatment of familial benign chronic pemphigus. Br J Dermatol. 1959;71:247-252.
- Roos DE, Reid CM. Benign familial pemphigus: little benefit from superficial radiotherapy. Australas J Dermatol. 2002;43:305-308.
- Podgornii A, Ciammella P, Ramundo D, et al. Efficacy of the radiotherapy on Darier’s disease: an indirect evidence. Case Rep Dermatol Med. 2013;2013:907802.
- Mac Manus MP, Cavalleri G, Ball DL, et al. Exacerbation, then clearance, of mutation-proven Darier’s disease of the skin after radiotherapy for bronchial carcinoma: a case of radiation-induced epidermal differentiation? Radiat Res. 2001;156:724-730.
- Kittridge A, Wahlgren C, Fuhrer R, et al. Treatment of recalcitrant Darier’s disease with electron beam therapy. Dermatol Ther. 2010;23:302-304.
- Preston DL, Shimizu Y, Pierce DA, et al. Studies of mortality of atomic bomb survivors. report 13: solid cancer and noncancer disease mortality: 1950-1997. Radiat Res. 2003;160:381-407.
- Fröhlich D, Baaske D, Glatzel M. Radiotherapy of hidradenitis suppurativa—still valid today? [in German]. Strahlenther Onkol. 2000;176:286-289.
- Heyd R, Tselis N, Ackermann H, et al. Radiation therapy for painful heel spurs: results of a prospective randomized study. Strahlenther Onkol. 2007;183:3-9.
Practice Points
- Hailey-Hailey disease (HHD) is a rare blistering dermatosis characterized by recurrent erythematous plaques with a predilection for the intertriginous areas.
- Electron beam radiotherapy is a potential treatment option for local control in patients with recalcitrant HHD.
Complete PCI beats culprit-lesion-only PCI in STEMI patients with multivessel CAD
Background: Previous trials have shown a reduction in composite outcomes if STEMI patients undergo staged PCI of nonculprit lesions discovered incidentally at the time of primary PCI for STEMI. However, no randomized trial has had the power to assess if staged PCI of nonculprit lesions reduces cardiovascular death or MI.
Study design: Prospective randomized clinical trial.
Setting: PCI-capable centers in 31 countries.
Synopsis: In this study, if multivessel disease was identified during primary PCI for STEMI, patients were randomized to either culprit-lesion-only PCI or complete revascularization with staged PCI of all suitable nonculprit lesions (either during the index hospitalization or up to 45 days after randomization).
Overall, 4,041 patients from 140 centers were randomized with median 3-year follow-up. The complete revascularization group had lower rates of the primary composite outcome of death from cardiovascular disease or new MI (absolute reduction, 2.7%; 7.8% vs. 10.5%; number needed to treat, 37; hazard ratio, 0.74; 95% confidence interval, 0.60-0.91; P = .004). This finding was driven by lower incidence of new MI in the complete revascularization group – the incidence of death was similar between the groups. A coprimary composite outcome of death from cardiovascular causes, new MI, or ischemia-driven revascularization also favored complete revascularization, with an absolute risk reduction of 7.8% (8.9% vs. 16.7%; NNT, 13; HR, 0.51; 95% CI, 0.43-0.61; P less than .001). No statistically significant differences between groups were noted for the safety outcomes of major bleeding, stroke, stent thrombosis, or contrast-induced kidney injury.
Bottom line: Patients with STEMI who have multivessel disease incidentally discovered during primary PCI have a lower incidence of new MI and ischemia-driven revascularization when they undergo complete revascularization of all suitable lesions, as opposed to PCI of only their culprit lesion.
Citation: Mehta SR et al. Complete revascularization with multivessel PCI for myocardial infarction. N Engl J Med. 2019 Oct 10;381:1411-21.
Dr. Porter is chief quality and safety resident at the Rocky Mountain Veterans Affairs Regional Medical Center, Aurora, Colo.
Background: Previous trials have shown a reduction in composite outcomes if STEMI patients undergo staged PCI of nonculprit lesions discovered incidentally at the time of primary PCI for STEMI. However, no randomized trial has had the power to assess if staged PCI of nonculprit lesions reduces cardiovascular death or MI.
Study design: Prospective randomized clinical trial.
Setting: PCI-capable centers in 31 countries.
Synopsis: In this study, if multivessel disease was identified during primary PCI for STEMI, patients were randomized to either culprit-lesion-only PCI or complete revascularization with staged PCI of all suitable nonculprit lesions (either during the index hospitalization or up to 45 days after randomization).
Overall, 4,041 patients from 140 centers were randomized with median 3-year follow-up. The complete revascularization group had lower rates of the primary composite outcome of death from cardiovascular disease or new MI (absolute reduction, 2.7%; 7.8% vs. 10.5%; number needed to treat, 37; hazard ratio, 0.74; 95% confidence interval, 0.60-0.91; P = .004). This finding was driven by lower incidence of new MI in the complete revascularization group – the incidence of death was similar between the groups. A coprimary composite outcome of death from cardiovascular causes, new MI, or ischemia-driven revascularization also favored complete revascularization, with an absolute risk reduction of 7.8% (8.9% vs. 16.7%; NNT, 13; HR, 0.51; 95% CI, 0.43-0.61; P less than .001). No statistically significant differences between groups were noted for the safety outcomes of major bleeding, stroke, stent thrombosis, or contrast-induced kidney injury.
Bottom line: Patients with STEMI who have multivessel disease incidentally discovered during primary PCI have a lower incidence of new MI and ischemia-driven revascularization when they undergo complete revascularization of all suitable lesions, as opposed to PCI of only their culprit lesion.
Citation: Mehta SR et al. Complete revascularization with multivessel PCI for myocardial infarction. N Engl J Med. 2019 Oct 10;381:1411-21.
Dr. Porter is chief quality and safety resident at the Rocky Mountain Veterans Affairs Regional Medical Center, Aurora, Colo.
Background: Previous trials have shown a reduction in composite outcomes if STEMI patients undergo staged PCI of nonculprit lesions discovered incidentally at the time of primary PCI for STEMI. However, no randomized trial has had the power to assess if staged PCI of nonculprit lesions reduces cardiovascular death or MI.
Study design: Prospective randomized clinical trial.
Setting: PCI-capable centers in 31 countries.
Synopsis: In this study, if multivessel disease was identified during primary PCI for STEMI, patients were randomized to either culprit-lesion-only PCI or complete revascularization with staged PCI of all suitable nonculprit lesions (either during the index hospitalization or up to 45 days after randomization).
Overall, 4,041 patients from 140 centers were randomized with median 3-year follow-up. The complete revascularization group had lower rates of the primary composite outcome of death from cardiovascular disease or new MI (absolute reduction, 2.7%; 7.8% vs. 10.5%; number needed to treat, 37; hazard ratio, 0.74; 95% confidence interval, 0.60-0.91; P = .004). This finding was driven by lower incidence of new MI in the complete revascularization group – the incidence of death was similar between the groups. A coprimary composite outcome of death from cardiovascular causes, new MI, or ischemia-driven revascularization also favored complete revascularization, with an absolute risk reduction of 7.8% (8.9% vs. 16.7%; NNT, 13; HR, 0.51; 95% CI, 0.43-0.61; P less than .001). No statistically significant differences between groups were noted for the safety outcomes of major bleeding, stroke, stent thrombosis, or contrast-induced kidney injury.
Bottom line: Patients with STEMI who have multivessel disease incidentally discovered during primary PCI have a lower incidence of new MI and ischemia-driven revascularization when they undergo complete revascularization of all suitable lesions, as opposed to PCI of only their culprit lesion.
Citation: Mehta SR et al. Complete revascularization with multivessel PCI for myocardial infarction. N Engl J Med. 2019 Oct 10;381:1411-21.
Dr. Porter is chief quality and safety resident at the Rocky Mountain Veterans Affairs Regional Medical Center, Aurora, Colo.
Hair Follicle Bulb Region: A Potential Nidus for the Formation of Osteoma Cutis
The term osteoma cutis (OC) is defined as the ossification or bone formation either in the dermis or hypodermis. 1 It is heterotopic in nature, referring to extraneous bone formation in soft tissue. Osteoma cutis was first described in 1858 2,3 ; in 1868, the multiple miliary form on the face was described. 4 Cutaneous ossification can take many forms, ranging from occurrence in a nevus (nevus of Nanta) to its association with rare genetic disorders, such as fibrodysplasia ossificans progressiva and Albright hereditary osteodystrophy.
Some of these ossifications are classified as primary; others are secondary, depending on the presence of a preexisting lesion (eg, pilomatricoma, basal cell carcinoma). However, certain conditions, such as multiple miliary osteoma of the face, can be difficult to classify due to the presence or absence of a history of acne or dermabrasion, or both. The secondary forms more commonly are encountered due to their incidental association with an excised lesion, such as pilomatricoma.
A precursor of OC has been neglected in the literature despite its common occurrence. It may have been peripherally alluded to in the literature in reference to the miliary form of OC.5,6 The cases reported here demonstrate small round nodules of calcification or ossification, or both, in punch biopsies and excision specimens from hair-bearing areas of skin, especially from the head and neck. These lesions are mainly observed in the peripilar location or more specifically in the approximate location of the hair bulb.
This article reviews a possible mechanism of formation of these osteocalcific micronodules. These often-encountered micronodules are small osteocalcific lesions without typical bone or well-formed OC, such as trabeculae formation or fatty marrow, and may represent earliest stages in the formation of OC.
Clinical Observations
During routine dermatopathologic practice, I observed incidental small osteocalcific micronodules in close proximity to the lower part of the hair follicle in multiple cases. These nodules were not related to the main lesion in the specimen and were not the reason for the biopsy or excision. Most of the time, these micronodules were noted in excision or re-excision specimens or in a punch biopsy.
In my review of multiple unrelated cases over time, incidental osteocalcific micronodules were observed occasionally in punch biopsies and excision specimens during routine practice. These micronodules were mainly located in the vicinity of a hair bulb (Figure 1). If the hair bulb was not present in the sections, these micronodules were noted near or within the fibrous tract (Figure 2) or beneath a sebaceous lobule (Figure 3). In an exceptional case, a small round deposit of osteoid was seen forming just above the dermal papilla of the hair bulb (Figure 4).
Multiple osteocalcific micronodules were identified in a case of cicatricial alopecia. These micronodules were observed in sections taken at the levels of hair bulbs, and more or less corresponded to the size of the bulb (Figure 5A). Fortuitously, the patient was dark-skinned; the remnants of melanin within the micronodules provided evidence that the micronodules were formed within hair bulbs. Melanin staining confirmed the presence of melanin within some of the micronodules (Figure 5B).
Comment
Skeletogenesis in humans takes place by 2 methods: endochondral ossification and intramembranous ossification. In contrast to endochondral ossification, intramembranous ossification does not require a preexisting cartilaginous template. Instead, there is condensation of mesenchymal cells, which differentiate into osteoblasts and lay down osteoid, thus forming an ossification center. Little is known about the mechanism of formation of OC or the nidus of formation of the primary form.
Incidental micronodules of calcification and ossification are routinely encountered during histopathologic review of specimens from hair-bearing areas of the skin in dermatopathology practice. A review of the literature, however, does not reveal any specific dermatopathologic term ascribed to this phenomenon. These lesions might be similar to those described by Hopkins5 in 1928 in the setting of miliary OC of the face secondary to acne. Rossman and Freeman6 also described the same lesions when referring to facial OC as a “stage of pre-osseous calcification.”
When these osteocalcific micronodules are encountered, it usually is in close proximity to a hair follicle bulb. When a hair bulb is not seen in the sections, the micronodules are noted near fibrous tracts, arrector pili muscles, or sebaceous lobules, suggesting a close peripilar or peribulbar location. The micronodules are approximately 0.5 mm in diameter—roughly the size of a hair bulb. Due to the close anatomic association of micronodules and the hair bulb, these lesions can be called pilar osteocalcific nodules (PONs).
The role of bone morphogenetic protein (BMP) signaling in the maintenance of the hair cycle is well established. Bone morphogenetic proteins are extracellular cytokines that belong to the transforming growth factor β family. The hair bulb microenvironment is rich in BMPs
As the name implies, BMPs were discovered in relation to their important role in osteogenesis and tissue homeostasis. More than 20 BMPs have been identified, many of which promote bone formation and repair of bone fracture. Osteoinductive BMPs include BMP-2 and BMP-4 through BMP-10; BMP-2 and BMP-4 are expressed in the hair matrix and BMP-4 and BMP-6 are expressed in the FDP.8,9 All bone-inducing BMPs can cause mesenchymal stem cells to differentiate into osteoblasts in vitro.10
Overactive BMP signaling has been shown to cause heterotopic ossification in patients with fibrodysplasia ossificans progressiva.8 Immunohistochemical expression of BMP-2 has been demonstrated in shadow cells of pilomatricoma.11 Calcification and ossification are seen in as many as 20% of pilomatricomas. Both BMP-2 and BMP-4 have been shown to induce osteogenic differentiation of mouse skin−derived fibroblasts and FDP cells.12
Myllylä et al13 described 4 cases of multiple miliary osteoma cutis (MMOC). They also found 47 reported cases of MMOC, in which there was a history of acne in 55% (26/47). Only 15% (7/47) of these cases were extrafacial on the neck, chest, back, and arms. Osteomas in these cases were not associated with folliculosebaceous units or other adnexal structures, which may have been due to replacement by acne scarring, as all 4 patients had a history of acne vulgaris. The authors postulated a role for the GNAS gene mutation in the morphogenesis of MMOC; however, no supporting evidence was found for this claim. They also postulated a role for BMPs in the formation of MMOC.13
Some disturbance or imbalance in hair bulb homeostasis leads to overactivity of BMP signaling, causing osteoinduction in the hair bulb region and formation of PONs. The cause of the disturbance could be a traumatic or inflammatory injury to the hair follicle, as in the case of the secondary form of MMOC in association with chronic acne. In the primary form of osteoma cutis, the trigger could be more subtle or subclinical.
Trauma and inflammation are the main initiating factors involved in ossification in patients with fibrodysplasia ossificans progressiva due to ectopic activity of BMPs.9 The primary form of ossification appears to be similar to the mechanism by which intramembranous ossification is laid down (ie, by differentiation of mesenchymal cells into osteoblasts). In the proposed scenario, the cells of FDP, under the influence of BMPs, differentiate into osteoblasts and lay down osteoid, forming a limited-capacity “ossification center” or pilar osteocalcific nodule.
It is difficult to know the exact relationship of PONs or OC to the hair bulb due to the 2-dimensional nature of histologic sections. However, considering the finding of a rare case of osteoid forming within the bulb and in another the presence of melanin within the osteocalcific nodule, it is likely that these lesions are formed within the hair bulb or in situations in which the conditions replicate the biochemical characteristics of the hair bulb (eg, pilomatricoma).
The formation of PONs might act as a terminal phase in the hair cycle that is rarely induced to provide an exit for damaged hair follicles from cyclical perpetuity. An unspecified event or injury might render a hair follicle unable to continue its cyclical growth and cause BMPs to induce premature calcification in or around the hair bulb, which would probably be the only known quasiphysiological mechanism for a damaged hair follicle to exit the hair cycle.
Another interesting aspect of osteoma formation in human skin is the similarity to osteoderms or the integumentary skeleton of vertebrates.14 Early in evolution, the dermal skeleton was the predominant skeletal system in some lineages. Phylogenetically, osteoderms are not uniformly distributed, and show a latent ability to manifest in some groups or lay dormant or disappear in others. The occurrence of primary osteomas in the human integument might be a vestigial manifestation of deep homology,15 a latent ability to form structures that have been lost. The embryologic formation of osteoderms in the dermis of vertebrates is thought to depend on the interaction or cross-talk between ectomesenchymal cells of neural crest origin and cells of the stratum basalis of epidermis, which is somewhat similar to the formation of the hair follicles.
Conclusion
Under certain conditions, the bulb region of a hair follicle might provide a nidus for the formation of OC. The hair bulb region contains both the precursor cellular element (mesenchymal cells of FDP) and the trigger cytokine (BMP) for the induction of osteogenic metaplasia.
- Burgdorf W, Nasemann T. Cutaneous osteomas: a clinical and histopathologic review. Arch Dermatol Res. 1977;260:121-135.
- Essing M. Osteoma cutis of the forehead. HNO. 1985;33:548-550.
- Bouraoui S, Mlika M, Kort R, et al. Miliary osteoma cutis of the face. J Dermatol Case Rep. 2011;5:77-81.
- Virchow R. Die krankhaften Geschwülste. Vol 2. Hirschwald; 1864.
- Hopkins JG. Multiple miliary osteomas of the skin: report of a case. Arch Derm Syphilol. 1928;18:706-715.
- Rossman RE, Freeman RG. Osteoma cutis, a stage of preosseous calcification. Arch Dermatol. 1964;89:68-73.
- Guha U, Mecklenburg L, Cowin P, et al. Bone morphogenetic protein signaling regulates postnatal hair follicle differentiation and cycling. Am J Pathol. 2004;165:729-740.
- Rendl M, Polak L, Fuchs E. BMP signaling in dermal papilla cells is required for their hair follicle-inductive properties. Genes Dev. 2008;22:543-557.
- Shi S, de Gorter DJJ, Hoogaars WMH, et al. Overactive bone morphogenetic protein signaling in heterotopic ossification and Duchenne muscular dystrophy. Cell Mol Life Sci. 2013;70:407-423.
- Miyazono K, Kamiya Y, Morikawa M. Bone morphogenetic protein receptors and signal transduction. J Biochem. 2010;147:35-51.
- Kurokawa I, Kusumoto K, Bessho K. Immunohistochemical expression of bone morphogenetic protein-2 in pilomatricoma. Br J Dermatol. 2000;143:754-758.
- Myllylä RM, Haapasaari K-M, Lehenkari P, et al. Bone morphogenetic proteins 4 and 2/7 induce osteogenic differentiation of mouse skin derived fibroblast and dermal papilla cells. Cell Tissue Res. 2014;355:463-470.
- Myllylä RM, Haapasaari KM, Palatsi R, et al. Multiple miliary osteoma cutis is a distinct disease entity: four case reports and review of the literature. Br J Dermatol. 2011;164:544-552.
- Vickaryous MK, Sire J-Y. The integumentary skeleton of tetrapods: origin, evolution, and development. J Anat. 2009;214:441-464.
- Vickaryous MK, Hall BK. Development of the dermal skeleton in Alligator mississippiensis (Archosauria, Crocodylia) with comments on the homology of osteoderms. J Morphol. 2008;269:398-422.
The term osteoma cutis (OC) is defined as the ossification or bone formation either in the dermis or hypodermis. 1 It is heterotopic in nature, referring to extraneous bone formation in soft tissue. Osteoma cutis was first described in 1858 2,3 ; in 1868, the multiple miliary form on the face was described. 4 Cutaneous ossification can take many forms, ranging from occurrence in a nevus (nevus of Nanta) to its association with rare genetic disorders, such as fibrodysplasia ossificans progressiva and Albright hereditary osteodystrophy.
Some of these ossifications are classified as primary; others are secondary, depending on the presence of a preexisting lesion (eg, pilomatricoma, basal cell carcinoma). However, certain conditions, such as multiple miliary osteoma of the face, can be difficult to classify due to the presence or absence of a history of acne or dermabrasion, or both. The secondary forms more commonly are encountered due to their incidental association with an excised lesion, such as pilomatricoma.
A precursor of OC has been neglected in the literature despite its common occurrence. It may have been peripherally alluded to in the literature in reference to the miliary form of OC.5,6 The cases reported here demonstrate small round nodules of calcification or ossification, or both, in punch biopsies and excision specimens from hair-bearing areas of skin, especially from the head and neck. These lesions are mainly observed in the peripilar location or more specifically in the approximate location of the hair bulb.
This article reviews a possible mechanism of formation of these osteocalcific micronodules. These often-encountered micronodules are small osteocalcific lesions without typical bone or well-formed OC, such as trabeculae formation or fatty marrow, and may represent earliest stages in the formation of OC.
Clinical Observations
During routine dermatopathologic practice, I observed incidental small osteocalcific micronodules in close proximity to the lower part of the hair follicle in multiple cases. These nodules were not related to the main lesion in the specimen and were not the reason for the biopsy or excision. Most of the time, these micronodules were noted in excision or re-excision specimens or in a punch biopsy.
In my review of multiple unrelated cases over time, incidental osteocalcific micronodules were observed occasionally in punch biopsies and excision specimens during routine practice. These micronodules were mainly located in the vicinity of a hair bulb (Figure 1). If the hair bulb was not present in the sections, these micronodules were noted near or within the fibrous tract (Figure 2) or beneath a sebaceous lobule (Figure 3). In an exceptional case, a small round deposit of osteoid was seen forming just above the dermal papilla of the hair bulb (Figure 4).
Multiple osteocalcific micronodules were identified in a case of cicatricial alopecia. These micronodules were observed in sections taken at the levels of hair bulbs, and more or less corresponded to the size of the bulb (Figure 5A). Fortuitously, the patient was dark-skinned; the remnants of melanin within the micronodules provided evidence that the micronodules were formed within hair bulbs. Melanin staining confirmed the presence of melanin within some of the micronodules (Figure 5B).
Comment
Skeletogenesis in humans takes place by 2 methods: endochondral ossification and intramembranous ossification. In contrast to endochondral ossification, intramembranous ossification does not require a preexisting cartilaginous template. Instead, there is condensation of mesenchymal cells, which differentiate into osteoblasts and lay down osteoid, thus forming an ossification center. Little is known about the mechanism of formation of OC or the nidus of formation of the primary form.
Incidental micronodules of calcification and ossification are routinely encountered during histopathologic review of specimens from hair-bearing areas of the skin in dermatopathology practice. A review of the literature, however, does not reveal any specific dermatopathologic term ascribed to this phenomenon. These lesions might be similar to those described by Hopkins5 in 1928 in the setting of miliary OC of the face secondary to acne. Rossman and Freeman6 also described the same lesions when referring to facial OC as a “stage of pre-osseous calcification.”
When these osteocalcific micronodules are encountered, it usually is in close proximity to a hair follicle bulb. When a hair bulb is not seen in the sections, the micronodules are noted near fibrous tracts, arrector pili muscles, or sebaceous lobules, suggesting a close peripilar or peribulbar location. The micronodules are approximately 0.5 mm in diameter—roughly the size of a hair bulb. Due to the close anatomic association of micronodules and the hair bulb, these lesions can be called pilar osteocalcific nodules (PONs).
The role of bone morphogenetic protein (BMP) signaling in the maintenance of the hair cycle is well established. Bone morphogenetic proteins are extracellular cytokines that belong to the transforming growth factor β family. The hair bulb microenvironment is rich in BMPs
As the name implies, BMPs were discovered in relation to their important role in osteogenesis and tissue homeostasis. More than 20 BMPs have been identified, many of which promote bone formation and repair of bone fracture. Osteoinductive BMPs include BMP-2 and BMP-4 through BMP-10; BMP-2 and BMP-4 are expressed in the hair matrix and BMP-4 and BMP-6 are expressed in the FDP.8,9 All bone-inducing BMPs can cause mesenchymal stem cells to differentiate into osteoblasts in vitro.10
Overactive BMP signaling has been shown to cause heterotopic ossification in patients with fibrodysplasia ossificans progressiva.8 Immunohistochemical expression of BMP-2 has been demonstrated in shadow cells of pilomatricoma.11 Calcification and ossification are seen in as many as 20% of pilomatricomas. Both BMP-2 and BMP-4 have been shown to induce osteogenic differentiation of mouse skin−derived fibroblasts and FDP cells.12
Myllylä et al13 described 4 cases of multiple miliary osteoma cutis (MMOC). They also found 47 reported cases of MMOC, in which there was a history of acne in 55% (26/47). Only 15% (7/47) of these cases were extrafacial on the neck, chest, back, and arms. Osteomas in these cases were not associated with folliculosebaceous units or other adnexal structures, which may have been due to replacement by acne scarring, as all 4 patients had a history of acne vulgaris. The authors postulated a role for the GNAS gene mutation in the morphogenesis of MMOC; however, no supporting evidence was found for this claim. They also postulated a role for BMPs in the formation of MMOC.13
Some disturbance or imbalance in hair bulb homeostasis leads to overactivity of BMP signaling, causing osteoinduction in the hair bulb region and formation of PONs. The cause of the disturbance could be a traumatic or inflammatory injury to the hair follicle, as in the case of the secondary form of MMOC in association with chronic acne. In the primary form of osteoma cutis, the trigger could be more subtle or subclinical.
Trauma and inflammation are the main initiating factors involved in ossification in patients with fibrodysplasia ossificans progressiva due to ectopic activity of BMPs.9 The primary form of ossification appears to be similar to the mechanism by which intramembranous ossification is laid down (ie, by differentiation of mesenchymal cells into osteoblasts). In the proposed scenario, the cells of FDP, under the influence of BMPs, differentiate into osteoblasts and lay down osteoid, forming a limited-capacity “ossification center” or pilar osteocalcific nodule.
It is difficult to know the exact relationship of PONs or OC to the hair bulb due to the 2-dimensional nature of histologic sections. However, considering the finding of a rare case of osteoid forming within the bulb and in another the presence of melanin within the osteocalcific nodule, it is likely that these lesions are formed within the hair bulb or in situations in which the conditions replicate the biochemical characteristics of the hair bulb (eg, pilomatricoma).
The formation of PONs might act as a terminal phase in the hair cycle that is rarely induced to provide an exit for damaged hair follicles from cyclical perpetuity. An unspecified event or injury might render a hair follicle unable to continue its cyclical growth and cause BMPs to induce premature calcification in or around the hair bulb, which would probably be the only known quasiphysiological mechanism for a damaged hair follicle to exit the hair cycle.
Another interesting aspect of osteoma formation in human skin is the similarity to osteoderms or the integumentary skeleton of vertebrates.14 Early in evolution, the dermal skeleton was the predominant skeletal system in some lineages. Phylogenetically, osteoderms are not uniformly distributed, and show a latent ability to manifest in some groups or lay dormant or disappear in others. The occurrence of primary osteomas in the human integument might be a vestigial manifestation of deep homology,15 a latent ability to form structures that have been lost. The embryologic formation of osteoderms in the dermis of vertebrates is thought to depend on the interaction or cross-talk between ectomesenchymal cells of neural crest origin and cells of the stratum basalis of epidermis, which is somewhat similar to the formation of the hair follicles.
Conclusion
Under certain conditions, the bulb region of a hair follicle might provide a nidus for the formation of OC. The hair bulb region contains both the precursor cellular element (mesenchymal cells of FDP) and the trigger cytokine (BMP) for the induction of osteogenic metaplasia.
The term osteoma cutis (OC) is defined as the ossification or bone formation either in the dermis or hypodermis. 1 It is heterotopic in nature, referring to extraneous bone formation in soft tissue. Osteoma cutis was first described in 1858 2,3 ; in 1868, the multiple miliary form on the face was described. 4 Cutaneous ossification can take many forms, ranging from occurrence in a nevus (nevus of Nanta) to its association with rare genetic disorders, such as fibrodysplasia ossificans progressiva and Albright hereditary osteodystrophy.
Some of these ossifications are classified as primary; others are secondary, depending on the presence of a preexisting lesion (eg, pilomatricoma, basal cell carcinoma). However, certain conditions, such as multiple miliary osteoma of the face, can be difficult to classify due to the presence or absence of a history of acne or dermabrasion, or both. The secondary forms more commonly are encountered due to their incidental association with an excised lesion, such as pilomatricoma.
A precursor of OC has been neglected in the literature despite its common occurrence. It may have been peripherally alluded to in the literature in reference to the miliary form of OC.5,6 The cases reported here demonstrate small round nodules of calcification or ossification, or both, in punch biopsies and excision specimens from hair-bearing areas of skin, especially from the head and neck. These lesions are mainly observed in the peripilar location or more specifically in the approximate location of the hair bulb.
This article reviews a possible mechanism of formation of these osteocalcific micronodules. These often-encountered micronodules are small osteocalcific lesions without typical bone or well-formed OC, such as trabeculae formation or fatty marrow, and may represent earliest stages in the formation of OC.
Clinical Observations
During routine dermatopathologic practice, I observed incidental small osteocalcific micronodules in close proximity to the lower part of the hair follicle in multiple cases. These nodules were not related to the main lesion in the specimen and were not the reason for the biopsy or excision. Most of the time, these micronodules were noted in excision or re-excision specimens or in a punch biopsy.
In my review of multiple unrelated cases over time, incidental osteocalcific micronodules were observed occasionally in punch biopsies and excision specimens during routine practice. These micronodules were mainly located in the vicinity of a hair bulb (Figure 1). If the hair bulb was not present in the sections, these micronodules were noted near or within the fibrous tract (Figure 2) or beneath a sebaceous lobule (Figure 3). In an exceptional case, a small round deposit of osteoid was seen forming just above the dermal papilla of the hair bulb (Figure 4).
Multiple osteocalcific micronodules were identified in a case of cicatricial alopecia. These micronodules were observed in sections taken at the levels of hair bulbs, and more or less corresponded to the size of the bulb (Figure 5A). Fortuitously, the patient was dark-skinned; the remnants of melanin within the micronodules provided evidence that the micronodules were formed within hair bulbs. Melanin staining confirmed the presence of melanin within some of the micronodules (Figure 5B).
Comment
Skeletogenesis in humans takes place by 2 methods: endochondral ossification and intramembranous ossification. In contrast to endochondral ossification, intramembranous ossification does not require a preexisting cartilaginous template. Instead, there is condensation of mesenchymal cells, which differentiate into osteoblasts and lay down osteoid, thus forming an ossification center. Little is known about the mechanism of formation of OC or the nidus of formation of the primary form.
Incidental micronodules of calcification and ossification are routinely encountered during histopathologic review of specimens from hair-bearing areas of the skin in dermatopathology practice. A review of the literature, however, does not reveal any specific dermatopathologic term ascribed to this phenomenon. These lesions might be similar to those described by Hopkins5 in 1928 in the setting of miliary OC of the face secondary to acne. Rossman and Freeman6 also described the same lesions when referring to facial OC as a “stage of pre-osseous calcification.”
When these osteocalcific micronodules are encountered, it usually is in close proximity to a hair follicle bulb. When a hair bulb is not seen in the sections, the micronodules are noted near fibrous tracts, arrector pili muscles, or sebaceous lobules, suggesting a close peripilar or peribulbar location. The micronodules are approximately 0.5 mm in diameter—roughly the size of a hair bulb. Due to the close anatomic association of micronodules and the hair bulb, these lesions can be called pilar osteocalcific nodules (PONs).
The role of bone morphogenetic protein (BMP) signaling in the maintenance of the hair cycle is well established. Bone morphogenetic proteins are extracellular cytokines that belong to the transforming growth factor β family. The hair bulb microenvironment is rich in BMPs
As the name implies, BMPs were discovered in relation to their important role in osteogenesis and tissue homeostasis. More than 20 BMPs have been identified, many of which promote bone formation and repair of bone fracture. Osteoinductive BMPs include BMP-2 and BMP-4 through BMP-10; BMP-2 and BMP-4 are expressed in the hair matrix and BMP-4 and BMP-6 are expressed in the FDP.8,9 All bone-inducing BMPs can cause mesenchymal stem cells to differentiate into osteoblasts in vitro.10
Overactive BMP signaling has been shown to cause heterotopic ossification in patients with fibrodysplasia ossificans progressiva.8 Immunohistochemical expression of BMP-2 has been demonstrated in shadow cells of pilomatricoma.11 Calcification and ossification are seen in as many as 20% of pilomatricomas. Both BMP-2 and BMP-4 have been shown to induce osteogenic differentiation of mouse skin−derived fibroblasts and FDP cells.12
Myllylä et al13 described 4 cases of multiple miliary osteoma cutis (MMOC). They also found 47 reported cases of MMOC, in which there was a history of acne in 55% (26/47). Only 15% (7/47) of these cases were extrafacial on the neck, chest, back, and arms. Osteomas in these cases were not associated with folliculosebaceous units or other adnexal structures, which may have been due to replacement by acne scarring, as all 4 patients had a history of acne vulgaris. The authors postulated a role for the GNAS gene mutation in the morphogenesis of MMOC; however, no supporting evidence was found for this claim. They also postulated a role for BMPs in the formation of MMOC.13
Some disturbance or imbalance in hair bulb homeostasis leads to overactivity of BMP signaling, causing osteoinduction in the hair bulb region and formation of PONs. The cause of the disturbance could be a traumatic or inflammatory injury to the hair follicle, as in the case of the secondary form of MMOC in association with chronic acne. In the primary form of osteoma cutis, the trigger could be more subtle or subclinical.
Trauma and inflammation are the main initiating factors involved in ossification in patients with fibrodysplasia ossificans progressiva due to ectopic activity of BMPs.9 The primary form of ossification appears to be similar to the mechanism by which intramembranous ossification is laid down (ie, by differentiation of mesenchymal cells into osteoblasts). In the proposed scenario, the cells of FDP, under the influence of BMPs, differentiate into osteoblasts and lay down osteoid, forming a limited-capacity “ossification center” or pilar osteocalcific nodule.
It is difficult to know the exact relationship of PONs or OC to the hair bulb due to the 2-dimensional nature of histologic sections. However, considering the finding of a rare case of osteoid forming within the bulb and in another the presence of melanin within the osteocalcific nodule, it is likely that these lesions are formed within the hair bulb or in situations in which the conditions replicate the biochemical characteristics of the hair bulb (eg, pilomatricoma).
The formation of PONs might act as a terminal phase in the hair cycle that is rarely induced to provide an exit for damaged hair follicles from cyclical perpetuity. An unspecified event or injury might render a hair follicle unable to continue its cyclical growth and cause BMPs to induce premature calcification in or around the hair bulb, which would probably be the only known quasiphysiological mechanism for a damaged hair follicle to exit the hair cycle.
Another interesting aspect of osteoma formation in human skin is the similarity to osteoderms or the integumentary skeleton of vertebrates.14 Early in evolution, the dermal skeleton was the predominant skeletal system in some lineages. Phylogenetically, osteoderms are not uniformly distributed, and show a latent ability to manifest in some groups or lay dormant or disappear in others. The occurrence of primary osteomas in the human integument might be a vestigial manifestation of deep homology,15 a latent ability to form structures that have been lost. The embryologic formation of osteoderms in the dermis of vertebrates is thought to depend on the interaction or cross-talk between ectomesenchymal cells of neural crest origin and cells of the stratum basalis of epidermis, which is somewhat similar to the formation of the hair follicles.
Conclusion
Under certain conditions, the bulb region of a hair follicle might provide a nidus for the formation of OC. The hair bulb region contains both the precursor cellular element (mesenchymal cells of FDP) and the trigger cytokine (BMP) for the induction of osteogenic metaplasia.
- Burgdorf W, Nasemann T. Cutaneous osteomas: a clinical and histopathologic review. Arch Dermatol Res. 1977;260:121-135.
- Essing M. Osteoma cutis of the forehead. HNO. 1985;33:548-550.
- Bouraoui S, Mlika M, Kort R, et al. Miliary osteoma cutis of the face. J Dermatol Case Rep. 2011;5:77-81.
- Virchow R. Die krankhaften Geschwülste. Vol 2. Hirschwald; 1864.
- Hopkins JG. Multiple miliary osteomas of the skin: report of a case. Arch Derm Syphilol. 1928;18:706-715.
- Rossman RE, Freeman RG. Osteoma cutis, a stage of preosseous calcification. Arch Dermatol. 1964;89:68-73.
- Guha U, Mecklenburg L, Cowin P, et al. Bone morphogenetic protein signaling regulates postnatal hair follicle differentiation and cycling. Am J Pathol. 2004;165:729-740.
- Rendl M, Polak L, Fuchs E. BMP signaling in dermal papilla cells is required for their hair follicle-inductive properties. Genes Dev. 2008;22:543-557.
- Shi S, de Gorter DJJ, Hoogaars WMH, et al. Overactive bone morphogenetic protein signaling in heterotopic ossification and Duchenne muscular dystrophy. Cell Mol Life Sci. 2013;70:407-423.
- Miyazono K, Kamiya Y, Morikawa M. Bone morphogenetic protein receptors and signal transduction. J Biochem. 2010;147:35-51.
- Kurokawa I, Kusumoto K, Bessho K. Immunohistochemical expression of bone morphogenetic protein-2 in pilomatricoma. Br J Dermatol. 2000;143:754-758.
- Myllylä RM, Haapasaari K-M, Lehenkari P, et al. Bone morphogenetic proteins 4 and 2/7 induce osteogenic differentiation of mouse skin derived fibroblast and dermal papilla cells. Cell Tissue Res. 2014;355:463-470.
- Myllylä RM, Haapasaari KM, Palatsi R, et al. Multiple miliary osteoma cutis is a distinct disease entity: four case reports and review of the literature. Br J Dermatol. 2011;164:544-552.
- Vickaryous MK, Sire J-Y. The integumentary skeleton of tetrapods: origin, evolution, and development. J Anat. 2009;214:441-464.
- Vickaryous MK, Hall BK. Development of the dermal skeleton in Alligator mississippiensis (Archosauria, Crocodylia) with comments on the homology of osteoderms. J Morphol. 2008;269:398-422.
- Burgdorf W, Nasemann T. Cutaneous osteomas: a clinical and histopathologic review. Arch Dermatol Res. 1977;260:121-135.
- Essing M. Osteoma cutis of the forehead. HNO. 1985;33:548-550.
- Bouraoui S, Mlika M, Kort R, et al. Miliary osteoma cutis of the face. J Dermatol Case Rep. 2011;5:77-81.
- Virchow R. Die krankhaften Geschwülste. Vol 2. Hirschwald; 1864.
- Hopkins JG. Multiple miliary osteomas of the skin: report of a case. Arch Derm Syphilol. 1928;18:706-715.
- Rossman RE, Freeman RG. Osteoma cutis, a stage of preosseous calcification. Arch Dermatol. 1964;89:68-73.
- Guha U, Mecklenburg L, Cowin P, et al. Bone morphogenetic protein signaling regulates postnatal hair follicle differentiation and cycling. Am J Pathol. 2004;165:729-740.
- Rendl M, Polak L, Fuchs E. BMP signaling in dermal papilla cells is required for their hair follicle-inductive properties. Genes Dev. 2008;22:543-557.
- Shi S, de Gorter DJJ, Hoogaars WMH, et al. Overactive bone morphogenetic protein signaling in heterotopic ossification and Duchenne muscular dystrophy. Cell Mol Life Sci. 2013;70:407-423.
- Miyazono K, Kamiya Y, Morikawa M. Bone morphogenetic protein receptors and signal transduction. J Biochem. 2010;147:35-51.
- Kurokawa I, Kusumoto K, Bessho K. Immunohistochemical expression of bone morphogenetic protein-2 in pilomatricoma. Br J Dermatol. 2000;143:754-758.
- Myllylä RM, Haapasaari K-M, Lehenkari P, et al. Bone morphogenetic proteins 4 and 2/7 induce osteogenic differentiation of mouse skin derived fibroblast and dermal papilla cells. Cell Tissue Res. 2014;355:463-470.
- Myllylä RM, Haapasaari KM, Palatsi R, et al. Multiple miliary osteoma cutis is a distinct disease entity: four case reports and review of the literature. Br J Dermatol. 2011;164:544-552.
- Vickaryous MK, Sire J-Y. The integumentary skeleton of tetrapods: origin, evolution, and development. J Anat. 2009;214:441-464.
- Vickaryous MK, Hall BK. Development of the dermal skeleton in Alligator mississippiensis (Archosauria, Crocodylia) with comments on the homology of osteoderms. J Morphol. 2008;269:398-422.
Practice Points
- Understanding the pathogenesis of osteoma cutis (OC) can help physicians devise management of these disfiguring lesions.
- Small osteocalcific nodules in close proximity to the lower aspect of the hair bulb may be an important precursor to OC.
Few outcome differences for younger adolescents after bariatric surgery
Younger adolescents who underwent metabolic and bariatric surgery had outcomes similar to those of older adolescents undergoing the same procedure, according to recent research in Pediatrics.
Five years after metabolic and bariatric surgery (MBS), adolescents between ages 13 and 15 years had similar outcomes with regard to reduction in body mass index percentage, hypertension and dyslipidemia, and improved quality of life, compared with adolescents between ages 16 and 19 years, according to Sarah B. Ogle, DO, MS, of Children’s Hospital Colorado at the University of Colorado at Denver, Aurora, and colleagues.
“These results appear promising for the treatment of severe obesity in young patients,” Dr. Ogle and colleagues wrote, “however, further controlled studies are needed to fully evaluate the timing of surgery and extended long-term durability.”
The researchers analyzed the outcomes of adolescents enrolled in the Teen–Longitudinal Assessment of Bariatric Surgery who were aged 19 years or younger and underwent MBS between March 2007 and December 2011 at five U.S. centers. In the group of younger adolescents (66 participants), the mean age at surgery was 15.1 years, while the group of older adolescents (162 participants) had a mean age of 17.7 years at the time of surgery. Both groups consisted mostly of White (71.6%-72.7%) girls (72.7%-75.9%) who were morbidly obese (mean BMI, 52.4-53.1 kg/m2). With regard to baseline comorbidities, about three-quarters of participants in the younger (72.4%) and older (77.0%) adolescent groups had dyslipidemia. More than one-quarter of younger adolescents had hypertension (27.3%) compared with more than one-third of older adolescents (37.1%). The prevalence of type 2 diabetes was 10.6% in the younger adolescent group and 13.6% among older adolescents.
At 5-year follow-up, there was a similar BMI reduction maintained from baseline in the younger adolescent group (–22.2%; 95% confidence interval, –26.2% to –18.2%) and the older adolescent group (–24.6%; 95% CI, –27.7% to –22.5%; P = .59). There was a similar number of participants who had remission of dyslipidemia at 5 years in the younger adolescent group (61%; 95% CI, 46.3%-81.1%) and older adolescent group (58%; 95% CI, 48.0%-68.9%; P = .74). In participants with hypertension, 77% of younger adolescents (95% CI, 57.1%-100.0%) and 67% of older adolescents (95% CI, 54.5%-81.5%) achieved remission at 5 years after MBS, which showed no significant differences after adjustment (P = .84). For participants with type 2 diabetes at baseline, 83% of younger adolescents (6 participants) and 87% of older adolescents (15 participants) experienced remission by 5 years after surgery. Participants in both younger and older adolescent groups had similar quality of life scores at 5 years after surgery. When analyzing nutritional abnormalities, the researchers found younger adolescents in the group were less at risk for elevated transferrin levels (prevalence ratio, 0.52; P = .048) as well as less likely to have low vitamin D levels (prevalence ratio, 0.8; P = .034).
Pediatricians still concerned about safety
In an interview, Kelly A. Curran, MD, MA, assistant professor of pediatrics at University of Oklahoma Children’s Hospital in Oklahoma City, said that the findings by Dr. Ogle and colleagues add to a “growing body of literature about the importance of bariatric surgery for both younger and older adolescents.
“While many often see bariatric surgery as a ‘last resort,’ this study shows good outcomes in resolving obesity-related health conditions in both young and older teens over time – and something that should be considered more frequently than it is currently being used,” she said.
Guidelines from the American Society for Metabolic and Bariatric Surgery removed a restriction for younger age before a patient undergoes MBS, and a policy statement from the American Academy of Pediatrics encouraged increased use and access to MBS for younger adolescents. However, Dr. Curran noted that many pediatricians are still concerned about performing MBS on younger adolescents.
“Despite growing evidence of safety, I think many pediatricians worry about the potential for unintended consequences and potential impact on adolescent development or for lifelong micronutrition deficiencies – especially as there are no longitudinal studies over a lifetime,” she said.
“[W]ith the growing obesity epidemic and the long-term consequences of obesity on health and quality of life – the potential to help impact adolescents’ lives – for now and for the future – is impressive,” Dr. Curran said, acknowledging the ethical challenges involved with performing MBS on a patient who may be too young to understand the full risks and benefits of surgery.
“There are always inherent ethical challenges in providing surgery for patients too young to understand – we are asking parents to act in their child’s best interests, which may be murky to elucidate,” she explained. “While there is [a] growing body of literature around the safety and efficacy in bariatric surgery for children and adolescents, there are still many unanswered questions that remain – especially for parents. Parents can feel trapped in between these two choices – have children undergo surgery or stick with potentially less effective medical management.”
The limitations of the study include its observational nature, small sample size of some comorbidities, and a lack of diversity among participants, most of whom were White and female. In addition, “long-term studies examining the impact of bariatric surgery during adolescence would be important to give more perspective and guidance on the risks and benefits for teens,” Dr. Curran said.
The study was funded by the National Institutes of Health and grants from the National Institute of Diabetes and Digestive and Kidney Diseases as well as grants from Cincinnati Children’s Hospital Medical Center, Nationwide Children’s Hospital, Texas Children’s Hospital and Baylor College of Medicine, University of Pittsburgh, and the University of Alabama at Birmingham. The authors and Dr. Curran reported no conflicts of interest.
Younger adolescents who underwent metabolic and bariatric surgery had outcomes similar to those of older adolescents undergoing the same procedure, according to recent research in Pediatrics.
Five years after metabolic and bariatric surgery (MBS), adolescents between ages 13 and 15 years had similar outcomes with regard to reduction in body mass index percentage, hypertension and dyslipidemia, and improved quality of life, compared with adolescents between ages 16 and 19 years, according to Sarah B. Ogle, DO, MS, of Children’s Hospital Colorado at the University of Colorado at Denver, Aurora, and colleagues.
“These results appear promising for the treatment of severe obesity in young patients,” Dr. Ogle and colleagues wrote, “however, further controlled studies are needed to fully evaluate the timing of surgery and extended long-term durability.”
The researchers analyzed the outcomes of adolescents enrolled in the Teen–Longitudinal Assessment of Bariatric Surgery who were aged 19 years or younger and underwent MBS between March 2007 and December 2011 at five U.S. centers. In the group of younger adolescents (66 participants), the mean age at surgery was 15.1 years, while the group of older adolescents (162 participants) had a mean age of 17.7 years at the time of surgery. Both groups consisted mostly of White (71.6%-72.7%) girls (72.7%-75.9%) who were morbidly obese (mean BMI, 52.4-53.1 kg/m2). With regard to baseline comorbidities, about three-quarters of participants in the younger (72.4%) and older (77.0%) adolescent groups had dyslipidemia. More than one-quarter of younger adolescents had hypertension (27.3%) compared with more than one-third of older adolescents (37.1%). The prevalence of type 2 diabetes was 10.6% in the younger adolescent group and 13.6% among older adolescents.
At 5-year follow-up, there was a similar BMI reduction maintained from baseline in the younger adolescent group (–22.2%; 95% confidence interval, –26.2% to –18.2%) and the older adolescent group (–24.6%; 95% CI, –27.7% to –22.5%; P = .59). There was a similar number of participants who had remission of dyslipidemia at 5 years in the younger adolescent group (61%; 95% CI, 46.3%-81.1%) and older adolescent group (58%; 95% CI, 48.0%-68.9%; P = .74). In participants with hypertension, 77% of younger adolescents (95% CI, 57.1%-100.0%) and 67% of older adolescents (95% CI, 54.5%-81.5%) achieved remission at 5 years after MBS, which showed no significant differences after adjustment (P = .84). For participants with type 2 diabetes at baseline, 83% of younger adolescents (6 participants) and 87% of older adolescents (15 participants) experienced remission by 5 years after surgery. Participants in both younger and older adolescent groups had similar quality of life scores at 5 years after surgery. When analyzing nutritional abnormalities, the researchers found younger adolescents in the group were less at risk for elevated transferrin levels (prevalence ratio, 0.52; P = .048) as well as less likely to have low vitamin D levels (prevalence ratio, 0.8; P = .034).
Pediatricians still concerned about safety
In an interview, Kelly A. Curran, MD, MA, assistant professor of pediatrics at University of Oklahoma Children’s Hospital in Oklahoma City, said that the findings by Dr. Ogle and colleagues add to a “growing body of literature about the importance of bariatric surgery for both younger and older adolescents.
“While many often see bariatric surgery as a ‘last resort,’ this study shows good outcomes in resolving obesity-related health conditions in both young and older teens over time – and something that should be considered more frequently than it is currently being used,” she said.
Guidelines from the American Society for Metabolic and Bariatric Surgery removed a restriction for younger age before a patient undergoes MBS, and a policy statement from the American Academy of Pediatrics encouraged increased use and access to MBS for younger adolescents. However, Dr. Curran noted that many pediatricians are still concerned about performing MBS on younger adolescents.
“Despite growing evidence of safety, I think many pediatricians worry about the potential for unintended consequences and potential impact on adolescent development or for lifelong micronutrition deficiencies – especially as there are no longitudinal studies over a lifetime,” she said.
“[W]ith the growing obesity epidemic and the long-term consequences of obesity on health and quality of life – the potential to help impact adolescents’ lives – for now and for the future – is impressive,” Dr. Curran said, acknowledging the ethical challenges involved with performing MBS on a patient who may be too young to understand the full risks and benefits of surgery.
“There are always inherent ethical challenges in providing surgery for patients too young to understand – we are asking parents to act in their child’s best interests, which may be murky to elucidate,” she explained. “While there is [a] growing body of literature around the safety and efficacy in bariatric surgery for children and adolescents, there are still many unanswered questions that remain – especially for parents. Parents can feel trapped in between these two choices – have children undergo surgery or stick with potentially less effective medical management.”
The limitations of the study include its observational nature, small sample size of some comorbidities, and a lack of diversity among participants, most of whom were White and female. In addition, “long-term studies examining the impact of bariatric surgery during adolescence would be important to give more perspective and guidance on the risks and benefits for teens,” Dr. Curran said.
The study was funded by the National Institutes of Health and grants from the National Institute of Diabetes and Digestive and Kidney Diseases as well as grants from Cincinnati Children’s Hospital Medical Center, Nationwide Children’s Hospital, Texas Children’s Hospital and Baylor College of Medicine, University of Pittsburgh, and the University of Alabama at Birmingham. The authors and Dr. Curran reported no conflicts of interest.
Younger adolescents who underwent metabolic and bariatric surgery had outcomes similar to those of older adolescents undergoing the same procedure, according to recent research in Pediatrics.
Five years after metabolic and bariatric surgery (MBS), adolescents between ages 13 and 15 years had similar outcomes with regard to reduction in body mass index percentage, hypertension and dyslipidemia, and improved quality of life, compared with adolescents between ages 16 and 19 years, according to Sarah B. Ogle, DO, MS, of Children’s Hospital Colorado at the University of Colorado at Denver, Aurora, and colleagues.
“These results appear promising for the treatment of severe obesity in young patients,” Dr. Ogle and colleagues wrote, “however, further controlled studies are needed to fully evaluate the timing of surgery and extended long-term durability.”
The researchers analyzed the outcomes of adolescents enrolled in the Teen–Longitudinal Assessment of Bariatric Surgery who were aged 19 years or younger and underwent MBS between March 2007 and December 2011 at five U.S. centers. In the group of younger adolescents (66 participants), the mean age at surgery was 15.1 years, while the group of older adolescents (162 participants) had a mean age of 17.7 years at the time of surgery. Both groups consisted mostly of White (71.6%-72.7%) girls (72.7%-75.9%) who were morbidly obese (mean BMI, 52.4-53.1 kg/m2). With regard to baseline comorbidities, about three-quarters of participants in the younger (72.4%) and older (77.0%) adolescent groups had dyslipidemia. More than one-quarter of younger adolescents had hypertension (27.3%) compared with more than one-third of older adolescents (37.1%). The prevalence of type 2 diabetes was 10.6% in the younger adolescent group and 13.6% among older adolescents.
At 5-year follow-up, there was a similar BMI reduction maintained from baseline in the younger adolescent group (–22.2%; 95% confidence interval, –26.2% to –18.2%) and the older adolescent group (–24.6%; 95% CI, –27.7% to –22.5%; P = .59). There was a similar number of participants who had remission of dyslipidemia at 5 years in the younger adolescent group (61%; 95% CI, 46.3%-81.1%) and older adolescent group (58%; 95% CI, 48.0%-68.9%; P = .74). In participants with hypertension, 77% of younger adolescents (95% CI, 57.1%-100.0%) and 67% of older adolescents (95% CI, 54.5%-81.5%) achieved remission at 5 years after MBS, which showed no significant differences after adjustment (P = .84). For participants with type 2 diabetes at baseline, 83% of younger adolescents (6 participants) and 87% of older adolescents (15 participants) experienced remission by 5 years after surgery. Participants in both younger and older adolescent groups had similar quality of life scores at 5 years after surgery. When analyzing nutritional abnormalities, the researchers found younger adolescents in the group were less at risk for elevated transferrin levels (prevalence ratio, 0.52; P = .048) as well as less likely to have low vitamin D levels (prevalence ratio, 0.8; P = .034).
Pediatricians still concerned about safety
In an interview, Kelly A. Curran, MD, MA, assistant professor of pediatrics at University of Oklahoma Children’s Hospital in Oklahoma City, said that the findings by Dr. Ogle and colleagues add to a “growing body of literature about the importance of bariatric surgery for both younger and older adolescents.
“While many often see bariatric surgery as a ‘last resort,’ this study shows good outcomes in resolving obesity-related health conditions in both young and older teens over time – and something that should be considered more frequently than it is currently being used,” she said.
Guidelines from the American Society for Metabolic and Bariatric Surgery removed a restriction for younger age before a patient undergoes MBS, and a policy statement from the American Academy of Pediatrics encouraged increased use and access to MBS for younger adolescents. However, Dr. Curran noted that many pediatricians are still concerned about performing MBS on younger adolescents.
“Despite growing evidence of safety, I think many pediatricians worry about the potential for unintended consequences and potential impact on adolescent development or for lifelong micronutrition deficiencies – especially as there are no longitudinal studies over a lifetime,” she said.
“[W]ith the growing obesity epidemic and the long-term consequences of obesity on health and quality of life – the potential to help impact adolescents’ lives – for now and for the future – is impressive,” Dr. Curran said, acknowledging the ethical challenges involved with performing MBS on a patient who may be too young to understand the full risks and benefits of surgery.
“There are always inherent ethical challenges in providing surgery for patients too young to understand – we are asking parents to act in their child’s best interests, which may be murky to elucidate,” she explained. “While there is [a] growing body of literature around the safety and efficacy in bariatric surgery for children and adolescents, there are still many unanswered questions that remain – especially for parents. Parents can feel trapped in between these two choices – have children undergo surgery or stick with potentially less effective medical management.”
The limitations of the study include its observational nature, small sample size of some comorbidities, and a lack of diversity among participants, most of whom were White and female. In addition, “long-term studies examining the impact of bariatric surgery during adolescence would be important to give more perspective and guidance on the risks and benefits for teens,” Dr. Curran said.
The study was funded by the National Institutes of Health and grants from the National Institute of Diabetes and Digestive and Kidney Diseases as well as grants from Cincinnati Children’s Hospital Medical Center, Nationwide Children’s Hospital, Texas Children’s Hospital and Baylor College of Medicine, University of Pittsburgh, and the University of Alabama at Birmingham. The authors and Dr. Curran reported no conflicts of interest.
FROM PEDIATRICS
Expert shares hyperhidrosis treatment pearls
Even though over-the-counter topical antiperspirants are a common go-to treatment for primary axillary hyperhidrosis, a large survey commissioned by the International Hyperhidrosis Society showed that, while OTC aluminum products are the most recommended, they offer the least satisfaction to patients.
Of the 1,985 survey respondents who self-identified as having excessive sweating, those who received treatment were most satisfied with injections and least satisfied with prescription and OTC antiperspirants and liposuction. “It’s important to recognize that, while these are not invasive, they’re simple, you need to keep up with it, and they’re really not that effective for primary hyperhidrosis,” Adam Friedman, MD, said during the virtual Orlando Dermatology Aesthetic and Clinical Conference.
A major development came in 2018, when the Food and Drug Administration approved topical glycopyrronium tosylate for the treatment of primary axillary hyperhidrosis in adults and in children as young as age 9. It marked the first topical anticholinergic approved for the condition. Results from the pivotal phase 2 ATMOS-1 and ATMOS-2 randomized, controlled trials found that, after 4 weeks of daily use, 53%-66% of patients reported a 4-point improvement or greater on the ASDD item 2, which is defined as the worst sweating they experienced in a 24-hour period on an 11-point scale.
“Patients want to know: How quickly am I going to see improvement? The answer to this can be central to treatment compliance,” said Dr. Friedman, professor and interim chair of dermatology at the George Washington University, Washington. “We have data showing that 23%-29% of patients using glycopyrronium tosylate met that primary outcome within 1 week of use. So, you can tell patients: ‘Help is on the way. You may see a response relatively soon.’ ”
The most common adverse events in the two trials were dry mouth, which affected 24% of patients, followed by mydriasis (7%), and oropharyngeal pain (6%). He advises patients to apply it once at night. “I tell my patients make this the last thing you do during your nighttime routine,” said Dr. Friedman, who coauthored a case-based clinical algorithm for approaching primary hyperhidrosis patients.
“Open it up, one swipe to the right [underarm], flip it over, one wipe of the left [underarm], toss the towelette, and wash your hands thoroughly. You don’t need to remove axillary hair or occlude the area. I tell them they may find some improvement within one week of daily use, but I give realistic expectations, usually 2-3 weeks. Tell them about the potential for side effects, which certainly can happen,” he said.
Investigators are evaluating how this product could be delivered to other body sites. Dr. Friedman said that he uses glycopyrronium tosylate off label for palmar and plantar hyperhidrosis. He advises patients to rub their hands or feet the cloth until it dries, toss the towelette, apply an occlusive agent like Aquaphor followed by gloves/socks for at least an hour, and then wash their hands or feet. “If they can keep the gloves or socks on overnight, that’s fine, but that’s very rare,” Dr. Friedman added.
“Typically, an hour or 2 of occlusive covering will get the product in where it needs to be. The upside of this product is that it’s noninvasive, there’s minimal irritation, it’s effective, and FDA approved. On the downside, it’s a long-term therapy. This is forever, so cost can be an issue, and you have to think about the anticholinergic effects as well.”
Iontophoresis is a first-line treatment for moderate to severe palmar and plantar hyperhidrosis. It’s also effective for mild hyperhidrosis with limited side effects, but it’s cumbersome, he said, requiring thrice-weekly treatment of each palm or sole for approximately 30 minutes to a controlled electric current at 15-20 mA with tap water.
There are no systemic agents approved for hyperhidrosis, only case reports or small case series. For now, the two commonly used anticholinergics are glycopyrrolate and oxybutynin. Glycopyrrolate comes in 1- and 2-mg capsules. “You can break the tablets easily and it’s pretty cheap, with an estimated cost of 2 mg/day at $756 per year,” Dr. Friedman said. “I typically start patients on 1 mg twice per day for a week, then ask how they’re doing. If they notice improvement, have minimal side effects but think they can do better, then I increase it by 1 mg and reassess. I give them autonomy, and at most, want them to max out at 6 mg per day. There is an oral solution for kids, which can make this a little more accessible.”
He prescribes oxybutynin infrequently but considers it effective. “Most patients respond to 5- to 10-mg/day dosing, but doses up to 15 or 20 mg daily may be required,” he noted.
For persistent flushing with hyperhidrosis, Dr. Friedman typically recommends treatment with clonidine. “I start patients pretty low, sometimes 0.05 mg twice per day.”
For patients who sweat because of social phobias and performance anxiety, he typically recommends treatment with a beta-adrenergic blocker. “These are highly lipophilic, so I advise patients not to take them with food,” he said. “The peak concentration is 1-1.5 hours. Usually, I start at 10 mg and I have people do a test run at home. I also take a baseline blood pressure in the office to make sure they’re not hypotensive.” The use of beta-adrenergic blockers is contraindicated in patients with bradycardia, atrioventricular block, and asthma. They can also exacerbate psoriasis.
On Sept. 20, 2020, Brickell Biotech announced the approval of sofpironium bromide gel, 5%, in Japan for the treatment of primary axillary hyperhidrosis. Sofpironium bromide is an analog of glycopyrrolate “that gets metabolized very quickly in order to limit systemic absorption of the active agent and therefore mitigate side effects,” Dr. Friedman said.
A recently published Japanese study found that 54% of patients with primary axillary hyperhidrosis who received sofpironium bromide experienced a 1- or 2-point improvement on the Hyperhidrosis Disease Severity Scale and a 50% or greater reduction in gravimetric sweat production from baseline to week 6 of treatment, compared with 36% of patients in the control group (P = .003). According to Dr. Friedman, a 15% formulation of this product is being studied in the United States, “but the experience in Japan with the 5% formulation should give us some real-world information about this product,” he said. “Out of the gate, we’re going to know something about how it’s being used.”
Dr. Friedman reported that he serves as a consultant and/or advisor to numerous pharmaceutical companies, including some that produce cannabinoids. He is also a speaker for Regeneron, Abbvie, Novartis, LRP, Dermira, and Brickel Biotech, and has received grants from Pfizer, the Dermatology Foundation, Almirall, and Janssen.
Even though over-the-counter topical antiperspirants are a common go-to treatment for primary axillary hyperhidrosis, a large survey commissioned by the International Hyperhidrosis Society showed that, while OTC aluminum products are the most recommended, they offer the least satisfaction to patients.
Of the 1,985 survey respondents who self-identified as having excessive sweating, those who received treatment were most satisfied with injections and least satisfied with prescription and OTC antiperspirants and liposuction. “It’s important to recognize that, while these are not invasive, they’re simple, you need to keep up with it, and they’re really not that effective for primary hyperhidrosis,” Adam Friedman, MD, said during the virtual Orlando Dermatology Aesthetic and Clinical Conference.
A major development came in 2018, when the Food and Drug Administration approved topical glycopyrronium tosylate for the treatment of primary axillary hyperhidrosis in adults and in children as young as age 9. It marked the first topical anticholinergic approved for the condition. Results from the pivotal phase 2 ATMOS-1 and ATMOS-2 randomized, controlled trials found that, after 4 weeks of daily use, 53%-66% of patients reported a 4-point improvement or greater on the ASDD item 2, which is defined as the worst sweating they experienced in a 24-hour period on an 11-point scale.
“Patients want to know: How quickly am I going to see improvement? The answer to this can be central to treatment compliance,” said Dr. Friedman, professor and interim chair of dermatology at the George Washington University, Washington. “We have data showing that 23%-29% of patients using glycopyrronium tosylate met that primary outcome within 1 week of use. So, you can tell patients: ‘Help is on the way. You may see a response relatively soon.’ ”
The most common adverse events in the two trials were dry mouth, which affected 24% of patients, followed by mydriasis (7%), and oropharyngeal pain (6%). He advises patients to apply it once at night. “I tell my patients make this the last thing you do during your nighttime routine,” said Dr. Friedman, who coauthored a case-based clinical algorithm for approaching primary hyperhidrosis patients.
“Open it up, one swipe to the right [underarm], flip it over, one wipe of the left [underarm], toss the towelette, and wash your hands thoroughly. You don’t need to remove axillary hair or occlude the area. I tell them they may find some improvement within one week of daily use, but I give realistic expectations, usually 2-3 weeks. Tell them about the potential for side effects, which certainly can happen,” he said.
Investigators are evaluating how this product could be delivered to other body sites. Dr. Friedman said that he uses glycopyrronium tosylate off label for palmar and plantar hyperhidrosis. He advises patients to rub their hands or feet the cloth until it dries, toss the towelette, apply an occlusive agent like Aquaphor followed by gloves/socks for at least an hour, and then wash their hands or feet. “If they can keep the gloves or socks on overnight, that’s fine, but that’s very rare,” Dr. Friedman added.
“Typically, an hour or 2 of occlusive covering will get the product in where it needs to be. The upside of this product is that it’s noninvasive, there’s minimal irritation, it’s effective, and FDA approved. On the downside, it’s a long-term therapy. This is forever, so cost can be an issue, and you have to think about the anticholinergic effects as well.”
Iontophoresis is a first-line treatment for moderate to severe palmar and plantar hyperhidrosis. It’s also effective for mild hyperhidrosis with limited side effects, but it’s cumbersome, he said, requiring thrice-weekly treatment of each palm or sole for approximately 30 minutes to a controlled electric current at 15-20 mA with tap water.
There are no systemic agents approved for hyperhidrosis, only case reports or small case series. For now, the two commonly used anticholinergics are glycopyrrolate and oxybutynin. Glycopyrrolate comes in 1- and 2-mg capsules. “You can break the tablets easily and it’s pretty cheap, with an estimated cost of 2 mg/day at $756 per year,” Dr. Friedman said. “I typically start patients on 1 mg twice per day for a week, then ask how they’re doing. If they notice improvement, have minimal side effects but think they can do better, then I increase it by 1 mg and reassess. I give them autonomy, and at most, want them to max out at 6 mg per day. There is an oral solution for kids, which can make this a little more accessible.”
He prescribes oxybutynin infrequently but considers it effective. “Most patients respond to 5- to 10-mg/day dosing, but doses up to 15 or 20 mg daily may be required,” he noted.
For persistent flushing with hyperhidrosis, Dr. Friedman typically recommends treatment with clonidine. “I start patients pretty low, sometimes 0.05 mg twice per day.”
For patients who sweat because of social phobias and performance anxiety, he typically recommends treatment with a beta-adrenergic blocker. “These are highly lipophilic, so I advise patients not to take them with food,” he said. “The peak concentration is 1-1.5 hours. Usually, I start at 10 mg and I have people do a test run at home. I also take a baseline blood pressure in the office to make sure they’re not hypotensive.” The use of beta-adrenergic blockers is contraindicated in patients with bradycardia, atrioventricular block, and asthma. They can also exacerbate psoriasis.
On Sept. 20, 2020, Brickell Biotech announced the approval of sofpironium bromide gel, 5%, in Japan for the treatment of primary axillary hyperhidrosis. Sofpironium bromide is an analog of glycopyrrolate “that gets metabolized very quickly in order to limit systemic absorption of the active agent and therefore mitigate side effects,” Dr. Friedman said.
A recently published Japanese study found that 54% of patients with primary axillary hyperhidrosis who received sofpironium bromide experienced a 1- or 2-point improvement on the Hyperhidrosis Disease Severity Scale and a 50% or greater reduction in gravimetric sweat production from baseline to week 6 of treatment, compared with 36% of patients in the control group (P = .003). According to Dr. Friedman, a 15% formulation of this product is being studied in the United States, “but the experience in Japan with the 5% formulation should give us some real-world information about this product,” he said. “Out of the gate, we’re going to know something about how it’s being used.”
Dr. Friedman reported that he serves as a consultant and/or advisor to numerous pharmaceutical companies, including some that produce cannabinoids. He is also a speaker for Regeneron, Abbvie, Novartis, LRP, Dermira, and Brickel Biotech, and has received grants from Pfizer, the Dermatology Foundation, Almirall, and Janssen.
Even though over-the-counter topical antiperspirants are a common go-to treatment for primary axillary hyperhidrosis, a large survey commissioned by the International Hyperhidrosis Society showed that, while OTC aluminum products are the most recommended, they offer the least satisfaction to patients.
Of the 1,985 survey respondents who self-identified as having excessive sweating, those who received treatment were most satisfied with injections and least satisfied with prescription and OTC antiperspirants and liposuction. “It’s important to recognize that, while these are not invasive, they’re simple, you need to keep up with it, and they’re really not that effective for primary hyperhidrosis,” Adam Friedman, MD, said during the virtual Orlando Dermatology Aesthetic and Clinical Conference.
A major development came in 2018, when the Food and Drug Administration approved topical glycopyrronium tosylate for the treatment of primary axillary hyperhidrosis in adults and in children as young as age 9. It marked the first topical anticholinergic approved for the condition. Results from the pivotal phase 2 ATMOS-1 and ATMOS-2 randomized, controlled trials found that, after 4 weeks of daily use, 53%-66% of patients reported a 4-point improvement or greater on the ASDD item 2, which is defined as the worst sweating they experienced in a 24-hour period on an 11-point scale.
“Patients want to know: How quickly am I going to see improvement? The answer to this can be central to treatment compliance,” said Dr. Friedman, professor and interim chair of dermatology at the George Washington University, Washington. “We have data showing that 23%-29% of patients using glycopyrronium tosylate met that primary outcome within 1 week of use. So, you can tell patients: ‘Help is on the way. You may see a response relatively soon.’ ”
The most common adverse events in the two trials were dry mouth, which affected 24% of patients, followed by mydriasis (7%), and oropharyngeal pain (6%). He advises patients to apply it once at night. “I tell my patients make this the last thing you do during your nighttime routine,” said Dr. Friedman, who coauthored a case-based clinical algorithm for approaching primary hyperhidrosis patients.
“Open it up, one swipe to the right [underarm], flip it over, one wipe of the left [underarm], toss the towelette, and wash your hands thoroughly. You don’t need to remove axillary hair or occlude the area. I tell them they may find some improvement within one week of daily use, but I give realistic expectations, usually 2-3 weeks. Tell them about the potential for side effects, which certainly can happen,” he said.
Investigators are evaluating how this product could be delivered to other body sites. Dr. Friedman said that he uses glycopyrronium tosylate off label for palmar and plantar hyperhidrosis. He advises patients to rub their hands or feet the cloth until it dries, toss the towelette, apply an occlusive agent like Aquaphor followed by gloves/socks for at least an hour, and then wash their hands or feet. “If they can keep the gloves or socks on overnight, that’s fine, but that’s very rare,” Dr. Friedman added.
“Typically, an hour or 2 of occlusive covering will get the product in where it needs to be. The upside of this product is that it’s noninvasive, there’s minimal irritation, it’s effective, and FDA approved. On the downside, it’s a long-term therapy. This is forever, so cost can be an issue, and you have to think about the anticholinergic effects as well.”
Iontophoresis is a first-line treatment for moderate to severe palmar and plantar hyperhidrosis. It’s also effective for mild hyperhidrosis with limited side effects, but it’s cumbersome, he said, requiring thrice-weekly treatment of each palm or sole for approximately 30 minutes to a controlled electric current at 15-20 mA with tap water.
There are no systemic agents approved for hyperhidrosis, only case reports or small case series. For now, the two commonly used anticholinergics are glycopyrrolate and oxybutynin. Glycopyrrolate comes in 1- and 2-mg capsules. “You can break the tablets easily and it’s pretty cheap, with an estimated cost of 2 mg/day at $756 per year,” Dr. Friedman said. “I typically start patients on 1 mg twice per day for a week, then ask how they’re doing. If they notice improvement, have minimal side effects but think they can do better, then I increase it by 1 mg and reassess. I give them autonomy, and at most, want them to max out at 6 mg per day. There is an oral solution for kids, which can make this a little more accessible.”
He prescribes oxybutynin infrequently but considers it effective. “Most patients respond to 5- to 10-mg/day dosing, but doses up to 15 or 20 mg daily may be required,” he noted.
For persistent flushing with hyperhidrosis, Dr. Friedman typically recommends treatment with clonidine. “I start patients pretty low, sometimes 0.05 mg twice per day.”
For patients who sweat because of social phobias and performance anxiety, he typically recommends treatment with a beta-adrenergic blocker. “These are highly lipophilic, so I advise patients not to take them with food,” he said. “The peak concentration is 1-1.5 hours. Usually, I start at 10 mg and I have people do a test run at home. I also take a baseline blood pressure in the office to make sure they’re not hypotensive.” The use of beta-adrenergic blockers is contraindicated in patients with bradycardia, atrioventricular block, and asthma. They can also exacerbate psoriasis.
On Sept. 20, 2020, Brickell Biotech announced the approval of sofpironium bromide gel, 5%, in Japan for the treatment of primary axillary hyperhidrosis. Sofpironium bromide is an analog of glycopyrrolate “that gets metabolized very quickly in order to limit systemic absorption of the active agent and therefore mitigate side effects,” Dr. Friedman said.
A recently published Japanese study found that 54% of patients with primary axillary hyperhidrosis who received sofpironium bromide experienced a 1- or 2-point improvement on the Hyperhidrosis Disease Severity Scale and a 50% or greater reduction in gravimetric sweat production from baseline to week 6 of treatment, compared with 36% of patients in the control group (P = .003). According to Dr. Friedman, a 15% formulation of this product is being studied in the United States, “but the experience in Japan with the 5% formulation should give us some real-world information about this product,” he said. “Out of the gate, we’re going to know something about how it’s being used.”
Dr. Friedman reported that he serves as a consultant and/or advisor to numerous pharmaceutical companies, including some that produce cannabinoids. He is also a speaker for Regeneron, Abbvie, Novartis, LRP, Dermira, and Brickel Biotech, and has received grants from Pfizer, the Dermatology Foundation, Almirall, and Janssen.
FROM ODAC 2021
How to choose the best aesthetic devices when launching your career
When a new body contouring device hit the market a few years ago, Nazanin Saedi, MD, had an opportunity to become the first Philadelphia area dermatologist to add the technology to her practice.
“I thought about it, but it didn’t make sense because it wasn’t something important to my patient population,” Dr. Saedi, who directs the Jefferson Laser Surgery and Cosmetic Dermatology Center in Philadelphia, said during the Orlando Dermatology Aesthetic and Clinical Conference. “If I’m not going to have the patient demand and make money from it, then it just doesn’t make sense.”
That experience illustrates one of many pearls of advice that Dr. Saedi shared during . “Include additional questions in new patient intake forms or online forms to get a sense of what your patient population is interested in,” she advised. “It’s important to understand that before you start to offer new services. Don’t just depend on social media to inform you of the latest trends and what people are doing across the country, because if you purchase something that is very popular on social media for people in New York or L.A., that might not be the best for your practice.”
According to market trends from the American Society for Dermatologic Surgery, 3.5 million laser-, light-, and energy-based procedures were performed in 2018. The top five were for wrinkles (809,166), sun damage (786,856), facial redness (612,367), excess hair (385,466), and melasma (226,007). “Considering this data, when you start a practice, do you buy something for wrinkles or for sun damage right away?” Dr. Saedi asked. “Maybe, but you really need to gauge the market that you practice in. You also want to consider your own skill set and what other dermatologists in your area are offering. If you don’t want to do aggressive procedures, then purchasing a fractional CO2 laser might not be the best device to start off with. If you are not comfortable dealing with those patients, and potential infections and scarring, then that’s not the right treatment for you. You have to reflect on and identify what you’re comfortable learning and doing and managing.”
Taking time to investigate the services offered by dermatologists and med spas within a few miles of your practice can help you avoid redundancy. “Learn the techniques and the small nuances that will give you a little bit of finesse and make you an expert, to set you apart from other practices,” said Dr. Saedi, who coauthored a chapter in the book, “The Business of Dermatology” (New York: Thieme Medical Publishers, 2020). “I always recommend treating your staff and members of your family, to understand how you can tweak treatments to get the most out of them. Once you treat your staff, they are walking advertisements for what you do. They can also counsel patients, walking them through the healing process after a procedure, so they can know what to expect.”
Appropriate planning and preparation can help avoid acquiring the wrong device, she continued. This includes patient demand, scheduling availability, office space, overhead costs, and the level of staff training. She recommends buying one device at a time and clearing profitability from that device before purchasing another, “because it can be a burden on your practice to have multiple devices all at once,” she said. “You also have to think about the hidden costs – the maintenance and the service contracts. That can exceed $10,000 per year, so consider that when you’re looking to purchase a new device.”
Most people buy laser-, light-, and energy-based devices, but renting for a stretch can help you test the waters without a significant long-term investment. “It might not be the newest laser, but it can help you gauge how much of demand you have for that service to see if you have the patient base to make that larger step of purchasing the device,” she said. “If you buy a new device, make sure that it’s not a counterfeit and that you still have a company service contract. There are many third-party companies selling pre-owned laser aesthetics. Make sure you’re getting the authentic device and that there is some kind of a service contract with the actual manufacturer so they can help fix it when things break down.”
When Dr. Saedi counsels residents about purchasing devices, she typically recommends these five categories in order of preference: vascular, pigment, hair, resurfacing, and body contouring/skin tightening. “If you can cover vascular, pigment, and some kind of textural improvement, you can treat about 90% of aesthetic patients who come through your door,” she said. “Sure, there are some who may want skin tightening that you may not be able to offer with laser resurfacing, but you’re going to be able capture a high patient population by offering these services,” she added. That is why a lot of people end up getting a platform with attachable handpieces, “where you can have one system that is able to offer many different services right off the bat.”
She advised factoring in the amount of time it takes for a procedure and how much time it will take up in a certain room. “That will affect your revenue as well. Are you going to delegate this, or is this something you will do on your own? Take that into account.”
Above all, don’t rush your device purchase. “Some laser company sales representatives may pressure you at the end of a quarter by saying, ‘This is the best deal I’m going to offer you. You’re never going to get a deal like this ever again,’ ” she said. “I advise people to do multiple demos so you’re not just doing a demo for a day and seeing one or two patients. Treat the same patients again a month later. Do multiple demos so that you can feel comfortable. Talk to dermatologists who have the device, who have real experience with it, so you can have the most amount of information moving forward.”
Dr. Saedi reported that she has received equipment from Alma, Aerolase, Cartessa, and Cynosure. She is a consultant to and/or an advisory board member for those companies, as well as for Alastin.
When a new body contouring device hit the market a few years ago, Nazanin Saedi, MD, had an opportunity to become the first Philadelphia area dermatologist to add the technology to her practice.
“I thought about it, but it didn’t make sense because it wasn’t something important to my patient population,” Dr. Saedi, who directs the Jefferson Laser Surgery and Cosmetic Dermatology Center in Philadelphia, said during the Orlando Dermatology Aesthetic and Clinical Conference. “If I’m not going to have the patient demand and make money from it, then it just doesn’t make sense.”
That experience illustrates one of many pearls of advice that Dr. Saedi shared during . “Include additional questions in new patient intake forms or online forms to get a sense of what your patient population is interested in,” she advised. “It’s important to understand that before you start to offer new services. Don’t just depend on social media to inform you of the latest trends and what people are doing across the country, because if you purchase something that is very popular on social media for people in New York or L.A., that might not be the best for your practice.”
According to market trends from the American Society for Dermatologic Surgery, 3.5 million laser-, light-, and energy-based procedures were performed in 2018. The top five were for wrinkles (809,166), sun damage (786,856), facial redness (612,367), excess hair (385,466), and melasma (226,007). “Considering this data, when you start a practice, do you buy something for wrinkles or for sun damage right away?” Dr. Saedi asked. “Maybe, but you really need to gauge the market that you practice in. You also want to consider your own skill set and what other dermatologists in your area are offering. If you don’t want to do aggressive procedures, then purchasing a fractional CO2 laser might not be the best device to start off with. If you are not comfortable dealing with those patients, and potential infections and scarring, then that’s not the right treatment for you. You have to reflect on and identify what you’re comfortable learning and doing and managing.”
Taking time to investigate the services offered by dermatologists and med spas within a few miles of your practice can help you avoid redundancy. “Learn the techniques and the small nuances that will give you a little bit of finesse and make you an expert, to set you apart from other practices,” said Dr. Saedi, who coauthored a chapter in the book, “The Business of Dermatology” (New York: Thieme Medical Publishers, 2020). “I always recommend treating your staff and members of your family, to understand how you can tweak treatments to get the most out of them. Once you treat your staff, they are walking advertisements for what you do. They can also counsel patients, walking them through the healing process after a procedure, so they can know what to expect.”
Appropriate planning and preparation can help avoid acquiring the wrong device, she continued. This includes patient demand, scheduling availability, office space, overhead costs, and the level of staff training. She recommends buying one device at a time and clearing profitability from that device before purchasing another, “because it can be a burden on your practice to have multiple devices all at once,” she said. “You also have to think about the hidden costs – the maintenance and the service contracts. That can exceed $10,000 per year, so consider that when you’re looking to purchase a new device.”
Most people buy laser-, light-, and energy-based devices, but renting for a stretch can help you test the waters without a significant long-term investment. “It might not be the newest laser, but it can help you gauge how much of demand you have for that service to see if you have the patient base to make that larger step of purchasing the device,” she said. “If you buy a new device, make sure that it’s not a counterfeit and that you still have a company service contract. There are many third-party companies selling pre-owned laser aesthetics. Make sure you’re getting the authentic device and that there is some kind of a service contract with the actual manufacturer so they can help fix it when things break down.”
When Dr. Saedi counsels residents about purchasing devices, she typically recommends these five categories in order of preference: vascular, pigment, hair, resurfacing, and body contouring/skin tightening. “If you can cover vascular, pigment, and some kind of textural improvement, you can treat about 90% of aesthetic patients who come through your door,” she said. “Sure, there are some who may want skin tightening that you may not be able to offer with laser resurfacing, but you’re going to be able capture a high patient population by offering these services,” she added. That is why a lot of people end up getting a platform with attachable handpieces, “where you can have one system that is able to offer many different services right off the bat.”
She advised factoring in the amount of time it takes for a procedure and how much time it will take up in a certain room. “That will affect your revenue as well. Are you going to delegate this, or is this something you will do on your own? Take that into account.”
Above all, don’t rush your device purchase. “Some laser company sales representatives may pressure you at the end of a quarter by saying, ‘This is the best deal I’m going to offer you. You’re never going to get a deal like this ever again,’ ” she said. “I advise people to do multiple demos so you’re not just doing a demo for a day and seeing one or two patients. Treat the same patients again a month later. Do multiple demos so that you can feel comfortable. Talk to dermatologists who have the device, who have real experience with it, so you can have the most amount of information moving forward.”
Dr. Saedi reported that she has received equipment from Alma, Aerolase, Cartessa, and Cynosure. She is a consultant to and/or an advisory board member for those companies, as well as for Alastin.
When a new body contouring device hit the market a few years ago, Nazanin Saedi, MD, had an opportunity to become the first Philadelphia area dermatologist to add the technology to her practice.
“I thought about it, but it didn’t make sense because it wasn’t something important to my patient population,” Dr. Saedi, who directs the Jefferson Laser Surgery and Cosmetic Dermatology Center in Philadelphia, said during the Orlando Dermatology Aesthetic and Clinical Conference. “If I’m not going to have the patient demand and make money from it, then it just doesn’t make sense.”
That experience illustrates one of many pearls of advice that Dr. Saedi shared during . “Include additional questions in new patient intake forms or online forms to get a sense of what your patient population is interested in,” she advised. “It’s important to understand that before you start to offer new services. Don’t just depend on social media to inform you of the latest trends and what people are doing across the country, because if you purchase something that is very popular on social media for people in New York or L.A., that might not be the best for your practice.”
According to market trends from the American Society for Dermatologic Surgery, 3.5 million laser-, light-, and energy-based procedures were performed in 2018. The top five were for wrinkles (809,166), sun damage (786,856), facial redness (612,367), excess hair (385,466), and melasma (226,007). “Considering this data, when you start a practice, do you buy something for wrinkles or for sun damage right away?” Dr. Saedi asked. “Maybe, but you really need to gauge the market that you practice in. You also want to consider your own skill set and what other dermatologists in your area are offering. If you don’t want to do aggressive procedures, then purchasing a fractional CO2 laser might not be the best device to start off with. If you are not comfortable dealing with those patients, and potential infections and scarring, then that’s not the right treatment for you. You have to reflect on and identify what you’re comfortable learning and doing and managing.”
Taking time to investigate the services offered by dermatologists and med spas within a few miles of your practice can help you avoid redundancy. “Learn the techniques and the small nuances that will give you a little bit of finesse and make you an expert, to set you apart from other practices,” said Dr. Saedi, who coauthored a chapter in the book, “The Business of Dermatology” (New York: Thieme Medical Publishers, 2020). “I always recommend treating your staff and members of your family, to understand how you can tweak treatments to get the most out of them. Once you treat your staff, they are walking advertisements for what you do. They can also counsel patients, walking them through the healing process after a procedure, so they can know what to expect.”
Appropriate planning and preparation can help avoid acquiring the wrong device, she continued. This includes patient demand, scheduling availability, office space, overhead costs, and the level of staff training. She recommends buying one device at a time and clearing profitability from that device before purchasing another, “because it can be a burden on your practice to have multiple devices all at once,” she said. “You also have to think about the hidden costs – the maintenance and the service contracts. That can exceed $10,000 per year, so consider that when you’re looking to purchase a new device.”
Most people buy laser-, light-, and energy-based devices, but renting for a stretch can help you test the waters without a significant long-term investment. “It might not be the newest laser, but it can help you gauge how much of demand you have for that service to see if you have the patient base to make that larger step of purchasing the device,” she said. “If you buy a new device, make sure that it’s not a counterfeit and that you still have a company service contract. There are many third-party companies selling pre-owned laser aesthetics. Make sure you’re getting the authentic device and that there is some kind of a service contract with the actual manufacturer so they can help fix it when things break down.”
When Dr. Saedi counsels residents about purchasing devices, she typically recommends these five categories in order of preference: vascular, pigment, hair, resurfacing, and body contouring/skin tightening. “If you can cover vascular, pigment, and some kind of textural improvement, you can treat about 90% of aesthetic patients who come through your door,” she said. “Sure, there are some who may want skin tightening that you may not be able to offer with laser resurfacing, but you’re going to be able capture a high patient population by offering these services,” she added. That is why a lot of people end up getting a platform with attachable handpieces, “where you can have one system that is able to offer many different services right off the bat.”
She advised factoring in the amount of time it takes for a procedure and how much time it will take up in a certain room. “That will affect your revenue as well. Are you going to delegate this, or is this something you will do on your own? Take that into account.”
Above all, don’t rush your device purchase. “Some laser company sales representatives may pressure you at the end of a quarter by saying, ‘This is the best deal I’m going to offer you. You’re never going to get a deal like this ever again,’ ” she said. “I advise people to do multiple demos so you’re not just doing a demo for a day and seeing one or two patients. Treat the same patients again a month later. Do multiple demos so that you can feel comfortable. Talk to dermatologists who have the device, who have real experience with it, so you can have the most amount of information moving forward.”
Dr. Saedi reported that she has received equipment from Alma, Aerolase, Cartessa, and Cynosure. She is a consultant to and/or an advisory board member for those companies, as well as for Alastin.
FROM ODAC 2021
Cognitive effects seen as transient for Alzheimer’s drug atabecestat
according to follow-up results from a truncated clinical trial.
A blinded, placebo-controlled, manufacturer-sponsored trial that had randomized 557 patients with preclinical Alzheimer’s disease to 25 mg daily oral atabecestat, 5 mg atabecestat, or placebo, was halted in 2018 over concerns about liver toxicity. The main outcome measure of the trial was change on the Alzheimer’s Disease Cooperative Study Preclinical Alzheimer Cognitive Composite, while two other scales were used to assess cognitive function and neuropsychological status.
A preliminary analysis found the higher dose of the atabecestat to significantly worsen subjects’ cognition starting at around 3 months of treatment, compared with placebo. Treatment with atabecestat was also seen associated with higher incidence of neuropsychiatric adverse events, including anxiety and depression.
In their follow-up study published Jan. 19, 2021 in JAMA Neurology (doi: 10.1001/jamaneurol.2020.4857), Reisa Sperling, MD, of Brigham and Women’s Hospital, Boston, and colleagues reported that the cognitive worsening and neuropsychiatric adverse effects seen linked to atabecestat treatment reverted to baseline levels within 6 months of halting treatment. Most of the worsening seen in the study was associated with episodic memory tasks, including “list learning, story memory, list recognition, story recall, and figure recall,” Dr. Sperling and colleagues found.
Atabecestat was also associated with “dose-related and duration-related decreases in whole-brain volume, compared with placebo treatment,” the investigators reported. Brain volume loss has been seen in trials of other beta-secretase (BACE) inhibitors and shown with one, umibecestat, to be reversible after stopping treatment.
Dr. Sperling and colleagues acknowledged as a major limitation of their study that just over a third of the cohort received another cognitive composite score after baseline. “The observation that cognitive worsening and neuropsychiatric-related [adverse events] recovered following discontinuation of atabecestat is encouraging but needs replication, given that the observation period after stopping treatment was variable and not preplanned,” the investigators wrote in their analysis. After a median exposure of 21 weeks to the study drug or placebo, subjects were followed off treatment for a median 15 weeks.
Questions surround BACE inhibitors
Development of atabecestat has been discontinued along with others in its class of agents, known as BACE inhibitors, which target an enzyme that initiates production of amyloid-beta, the plaque-forming peptide that is considered a driver of Alzheimer’s disease. In the past few years a number of BACE inhibitors have been shown in trials to worsen cognition in a dose-dependent way, compared with placebo. The reasons for these effects are still unknown.
Dr. Sperling and colleagues concluded that, if BACE investigators like atabecestat are to be studied anew, it must be at low doses, with more modest enzyme inhibition, and alongside careful safety and cognitive monitoring.
While no BACE inhibitor is currently in the pipeline for Alzheimer’s – trials of these agents have been stopped for futility or toxicity –Paul Aisen, MD of the University of Southern California, Los Angeles, and a coauthor of Dr. Sperling and colleagues’ study, commented that it was important that clinical investigation of BACE inhibitors continue.
“This drug class is optimal to correct the metabolic dysregulation that is likely a primary root cause” of Alzheimer’s disease, Dr. Aisen said in an interview. “Evidence from trials such as this suggest that the cognitive toxicity of BACE inhibitors is dose related, nonprogressive, and reversible. We should now focus on establishing the safety of relatively low-dose BACE inhibition so that such regimens can be tested in AD trials.”
Research should continue
Robert Vassar, PhD, of Northwestern University, Chicago, who was not a coauthor on the study, also expressed a desire for BACE inhibitor research to continue.
“It is my view that the cognitive worsening of atabecestat and the other BACE inhibitors was caused by overinhibition of the enzyme related to functions of certain BACE substrates in the brain,” Dr. Vassar commented. “A major question is whether a lower dose of BACE inhibitor – achieving about 30% inhibition – could be safe and lower amyloid-beta enough to delay onset in people still without symptoms. The good news of this study is that the atabecestat-related cognitive worsening is reversible, leaving open the possibility of low-dose prevention trials.”
Dr. Vassar noted that, with both doses of atabecestat, Dr. Sperling and colleagues did not see changes in neurofilament light or total tau, two biomarkers of neurodegeneration, but did report decreases in phosphorylated tau (p181 tau), a marker of disease progression, compared with placebo.
“This indicates that atabecestat did not cause neurodegeneration and in fact moved p181 tau in the beneficial direction for Alzheimer’s disease. Perhaps if it were not for the liver toxicity, the trial may have been completed and other Alzheimer’s disease biomarkers may have changed in the beneficial direction as well,” Dr. Vassar said.
Dr. Sperling and colleagues’ study was sponsored by Janssen, the manufacturer of atabecestat. Dr. Sperling disclosed receiving research funding from Janssen and other drug makers, while nearly all the study’s coauthors reported being directly employed by the sponsor or receiving industry funding. Dr. Aisen disclosed personal fees from several manufacturers and past fees from the sponsor. Dr. Vassar disclosed consulting and other financial relationships with biotechnology companies that did not include this study’s sponsor.
according to follow-up results from a truncated clinical trial.
A blinded, placebo-controlled, manufacturer-sponsored trial that had randomized 557 patients with preclinical Alzheimer’s disease to 25 mg daily oral atabecestat, 5 mg atabecestat, or placebo, was halted in 2018 over concerns about liver toxicity. The main outcome measure of the trial was change on the Alzheimer’s Disease Cooperative Study Preclinical Alzheimer Cognitive Composite, while two other scales were used to assess cognitive function and neuropsychological status.
A preliminary analysis found the higher dose of the atabecestat to significantly worsen subjects’ cognition starting at around 3 months of treatment, compared with placebo. Treatment with atabecestat was also seen associated with higher incidence of neuropsychiatric adverse events, including anxiety and depression.
In their follow-up study published Jan. 19, 2021 in JAMA Neurology (doi: 10.1001/jamaneurol.2020.4857), Reisa Sperling, MD, of Brigham and Women’s Hospital, Boston, and colleagues reported that the cognitive worsening and neuropsychiatric adverse effects seen linked to atabecestat treatment reverted to baseline levels within 6 months of halting treatment. Most of the worsening seen in the study was associated with episodic memory tasks, including “list learning, story memory, list recognition, story recall, and figure recall,” Dr. Sperling and colleagues found.
Atabecestat was also associated with “dose-related and duration-related decreases in whole-brain volume, compared with placebo treatment,” the investigators reported. Brain volume loss has been seen in trials of other beta-secretase (BACE) inhibitors and shown with one, umibecestat, to be reversible after stopping treatment.
Dr. Sperling and colleagues acknowledged as a major limitation of their study that just over a third of the cohort received another cognitive composite score after baseline. “The observation that cognitive worsening and neuropsychiatric-related [adverse events] recovered following discontinuation of atabecestat is encouraging but needs replication, given that the observation period after stopping treatment was variable and not preplanned,” the investigators wrote in their analysis. After a median exposure of 21 weeks to the study drug or placebo, subjects were followed off treatment for a median 15 weeks.
Questions surround BACE inhibitors
Development of atabecestat has been discontinued along with others in its class of agents, known as BACE inhibitors, which target an enzyme that initiates production of amyloid-beta, the plaque-forming peptide that is considered a driver of Alzheimer’s disease. In the past few years a number of BACE inhibitors have been shown in trials to worsen cognition in a dose-dependent way, compared with placebo. The reasons for these effects are still unknown.
Dr. Sperling and colleagues concluded that, if BACE investigators like atabecestat are to be studied anew, it must be at low doses, with more modest enzyme inhibition, and alongside careful safety and cognitive monitoring.
While no BACE inhibitor is currently in the pipeline for Alzheimer’s – trials of these agents have been stopped for futility or toxicity –Paul Aisen, MD of the University of Southern California, Los Angeles, and a coauthor of Dr. Sperling and colleagues’ study, commented that it was important that clinical investigation of BACE inhibitors continue.
“This drug class is optimal to correct the metabolic dysregulation that is likely a primary root cause” of Alzheimer’s disease, Dr. Aisen said in an interview. “Evidence from trials such as this suggest that the cognitive toxicity of BACE inhibitors is dose related, nonprogressive, and reversible. We should now focus on establishing the safety of relatively low-dose BACE inhibition so that such regimens can be tested in AD trials.”
Research should continue
Robert Vassar, PhD, of Northwestern University, Chicago, who was not a coauthor on the study, also expressed a desire for BACE inhibitor research to continue.
“It is my view that the cognitive worsening of atabecestat and the other BACE inhibitors was caused by overinhibition of the enzyme related to functions of certain BACE substrates in the brain,” Dr. Vassar commented. “A major question is whether a lower dose of BACE inhibitor – achieving about 30% inhibition – could be safe and lower amyloid-beta enough to delay onset in people still without symptoms. The good news of this study is that the atabecestat-related cognitive worsening is reversible, leaving open the possibility of low-dose prevention trials.”
Dr. Vassar noted that, with both doses of atabecestat, Dr. Sperling and colleagues did not see changes in neurofilament light or total tau, two biomarkers of neurodegeneration, but did report decreases in phosphorylated tau (p181 tau), a marker of disease progression, compared with placebo.
“This indicates that atabecestat did not cause neurodegeneration and in fact moved p181 tau in the beneficial direction for Alzheimer’s disease. Perhaps if it were not for the liver toxicity, the trial may have been completed and other Alzheimer’s disease biomarkers may have changed in the beneficial direction as well,” Dr. Vassar said.
Dr. Sperling and colleagues’ study was sponsored by Janssen, the manufacturer of atabecestat. Dr. Sperling disclosed receiving research funding from Janssen and other drug makers, while nearly all the study’s coauthors reported being directly employed by the sponsor or receiving industry funding. Dr. Aisen disclosed personal fees from several manufacturers and past fees from the sponsor. Dr. Vassar disclosed consulting and other financial relationships with biotechnology companies that did not include this study’s sponsor.
according to follow-up results from a truncated clinical trial.
A blinded, placebo-controlled, manufacturer-sponsored trial that had randomized 557 patients with preclinical Alzheimer’s disease to 25 mg daily oral atabecestat, 5 mg atabecestat, or placebo, was halted in 2018 over concerns about liver toxicity. The main outcome measure of the trial was change on the Alzheimer’s Disease Cooperative Study Preclinical Alzheimer Cognitive Composite, while two other scales were used to assess cognitive function and neuropsychological status.
A preliminary analysis found the higher dose of the atabecestat to significantly worsen subjects’ cognition starting at around 3 months of treatment, compared with placebo. Treatment with atabecestat was also seen associated with higher incidence of neuropsychiatric adverse events, including anxiety and depression.
In their follow-up study published Jan. 19, 2021 in JAMA Neurology (doi: 10.1001/jamaneurol.2020.4857), Reisa Sperling, MD, of Brigham and Women’s Hospital, Boston, and colleagues reported that the cognitive worsening and neuropsychiatric adverse effects seen linked to atabecestat treatment reverted to baseline levels within 6 months of halting treatment. Most of the worsening seen in the study was associated with episodic memory tasks, including “list learning, story memory, list recognition, story recall, and figure recall,” Dr. Sperling and colleagues found.
Atabecestat was also associated with “dose-related and duration-related decreases in whole-brain volume, compared with placebo treatment,” the investigators reported. Brain volume loss has been seen in trials of other beta-secretase (BACE) inhibitors and shown with one, umibecestat, to be reversible after stopping treatment.
Dr. Sperling and colleagues acknowledged as a major limitation of their study that just over a third of the cohort received another cognitive composite score after baseline. “The observation that cognitive worsening and neuropsychiatric-related [adverse events] recovered following discontinuation of atabecestat is encouraging but needs replication, given that the observation period after stopping treatment was variable and not preplanned,” the investigators wrote in their analysis. After a median exposure of 21 weeks to the study drug or placebo, subjects were followed off treatment for a median 15 weeks.
Questions surround BACE inhibitors
Development of atabecestat has been discontinued along with others in its class of agents, known as BACE inhibitors, which target an enzyme that initiates production of amyloid-beta, the plaque-forming peptide that is considered a driver of Alzheimer’s disease. In the past few years a number of BACE inhibitors have been shown in trials to worsen cognition in a dose-dependent way, compared with placebo. The reasons for these effects are still unknown.
Dr. Sperling and colleagues concluded that, if BACE investigators like atabecestat are to be studied anew, it must be at low doses, with more modest enzyme inhibition, and alongside careful safety and cognitive monitoring.
While no BACE inhibitor is currently in the pipeline for Alzheimer’s – trials of these agents have been stopped for futility or toxicity –Paul Aisen, MD of the University of Southern California, Los Angeles, and a coauthor of Dr. Sperling and colleagues’ study, commented that it was important that clinical investigation of BACE inhibitors continue.
“This drug class is optimal to correct the metabolic dysregulation that is likely a primary root cause” of Alzheimer’s disease, Dr. Aisen said in an interview. “Evidence from trials such as this suggest that the cognitive toxicity of BACE inhibitors is dose related, nonprogressive, and reversible. We should now focus on establishing the safety of relatively low-dose BACE inhibition so that such regimens can be tested in AD trials.”
Research should continue
Robert Vassar, PhD, of Northwestern University, Chicago, who was not a coauthor on the study, also expressed a desire for BACE inhibitor research to continue.
“It is my view that the cognitive worsening of atabecestat and the other BACE inhibitors was caused by overinhibition of the enzyme related to functions of certain BACE substrates in the brain,” Dr. Vassar commented. “A major question is whether a lower dose of BACE inhibitor – achieving about 30% inhibition – could be safe and lower amyloid-beta enough to delay onset in people still without symptoms. The good news of this study is that the atabecestat-related cognitive worsening is reversible, leaving open the possibility of low-dose prevention trials.”
Dr. Vassar noted that, with both doses of atabecestat, Dr. Sperling and colleagues did not see changes in neurofilament light or total tau, two biomarkers of neurodegeneration, but did report decreases in phosphorylated tau (p181 tau), a marker of disease progression, compared with placebo.
“This indicates that atabecestat did not cause neurodegeneration and in fact moved p181 tau in the beneficial direction for Alzheimer’s disease. Perhaps if it were not for the liver toxicity, the trial may have been completed and other Alzheimer’s disease biomarkers may have changed in the beneficial direction as well,” Dr. Vassar said.
Dr. Sperling and colleagues’ study was sponsored by Janssen, the manufacturer of atabecestat. Dr. Sperling disclosed receiving research funding from Janssen and other drug makers, while nearly all the study’s coauthors reported being directly employed by the sponsor or receiving industry funding. Dr. Aisen disclosed personal fees from several manufacturers and past fees from the sponsor. Dr. Vassar disclosed consulting and other financial relationships with biotechnology companies that did not include this study’s sponsor.
FROM JAMA NEUROLOGY
Afternoon napping associated with better cognition in elderly, study shows
according to a new study in General Psychiatry.
The findings add to those seen in other observational studies showing afternoon napping promotes cognitive function, said the authors of the paper, published in General Psychiatry.
“The prevalence of afternoon napping has been increasing in older adults much more than in younger individuals,” wrote Han Cai, MS, of the department of geriatrics at The Fourth People’s Hospital of Wuhu, Anhui, China, and coauthors. “The elderly individuals who took afternoon naps showed significantly higher cognitive performance compared with those who did not nap.”
The researchers enrolled 2,214 people in the study – all Han Chinese and aged 60 or older. Afternoon napping was considered any period of inactivity of at least 5 minutes but less than 2 hours after lunch and outside of the person’s main sleep schedule. Those who reported ever napping – 1,534 subjects – were included in the napping group, and the others – 680 – in the nonnapping group. Patients with major physical conditions were excluded.
The Montreal Cognitive Assessment (MoCA), the Mini-Mental State Examination (MMSE), and the Neuropsychological Test Battery (NTB) were used to measure cognitive function, and 739 patients agreed to blood tests for lipid values.
The average total MMSE score was higher for the napping group at 25.3 points out of 30, than for the nonnapping group, at 24.56 (P = .003). Those in the napping group also had significantly higher scores in the orientation portion of the MoCA test, at 5.55 out of 6 points, compared with 5.41 for the nonnapping group (P = .006).
Those in the napping group scored significantly higher on the digit span and language fluency parts of the Neuropsychological Test Battery (P = .009 and .020, respectively).
Dementia was assessed with face-to-face visits with clinicians, but diagnoses of dementia were not different between the groups.
Triglycerides were found to be higher – though still in the normal range – in the napping group compared with the nonnapping group, 1.80 mmol/L to 1.75 mmol/L, the researchers found (P = .001). No differences were seen for HDL or LDL cholesterol levels, or in hypertension or diabetes, the researchers reported.
The authors noted that inflammation is likely an important feature in the relationship between napping and cognitive function. Inflammatory cytokines have been found to play a role in sleep disorders, and strong inflammatory responses can lead to adverse events, including cognitive impairment.
“Sleep is known to be a regulator of the immune response that counters these inflammatory mediators, whereas napping, in particular, is thought to be an evolved response to inflammation,” they said.
The average age of patients in the napping group was 72.8 years, slightly older than those in the nonnapping group at 71.3 years, and this was a significant difference (P = .016).
The researchers acknowledged that the study “could not show direct causality of napping, whether beneficial or harmful,” and that “a lack of detailed information regarding napping duration ... also limited the description of napping status.”
Junxin Li, PhD, RN, assistant professor at Johns Hopkins School of Nursing, Baltimore, who has studied napping and cognition, said that previous research generally supports a U-shaped relationship between napping and mental acuity, with shorter or medium-length naps benefiting cognition and no naps or naps that are too long being detrimental.
“This study looked at no nap versus naps of less than 2 hours and may not be able to capture this potential U-shaped association,” she said.
For clinicians, the duration, timing, frequency, and purpose of naps are important factors in making recommendations to patients, she said.
“For example, timing – napping in the early evening close to older adult’s bedtime may delay their bedtime and interfere with their nighttime sleep quality. Taking naps after lunchtime is hypothesized to provide the most therapeutic values to the health and usually recommended,” she said. Regular napping is better than “randomly dozing off,” Dr. Li added.
There are also cultural considerations – in east Asia, napping tends to be considered part of a healthy lifestyle, while in western countries it is not – and this could impact napping behaviors and how these behaviors affect cognition, she said.
Phyllis C. Zee, MD, PhD, director of the Center for Circadian and Sleep Medicine at the Northwestern University, Chicago, said the results are consistent with early cross-sectional studies that showed that regular, scheduled naps in the afternoon were associated with positive cognitive performance and lower cardiometabolic disease risk.
Dr. Zee noted that it’s important to recognize that the positive data are associated with naps that are planned, while older adults napping because of excess sleepiness are at a higher risk for cognitive impairment and other health issues.
The study authors, Dr. Li, and Dr. Zee reported no relevant financial disclosures.
according to a new study in General Psychiatry.
The findings add to those seen in other observational studies showing afternoon napping promotes cognitive function, said the authors of the paper, published in General Psychiatry.
“The prevalence of afternoon napping has been increasing in older adults much more than in younger individuals,” wrote Han Cai, MS, of the department of geriatrics at The Fourth People’s Hospital of Wuhu, Anhui, China, and coauthors. “The elderly individuals who took afternoon naps showed significantly higher cognitive performance compared with those who did not nap.”
The researchers enrolled 2,214 people in the study – all Han Chinese and aged 60 or older. Afternoon napping was considered any period of inactivity of at least 5 minutes but less than 2 hours after lunch and outside of the person’s main sleep schedule. Those who reported ever napping – 1,534 subjects – were included in the napping group, and the others – 680 – in the nonnapping group. Patients with major physical conditions were excluded.
The Montreal Cognitive Assessment (MoCA), the Mini-Mental State Examination (MMSE), and the Neuropsychological Test Battery (NTB) were used to measure cognitive function, and 739 patients agreed to blood tests for lipid values.
The average total MMSE score was higher for the napping group at 25.3 points out of 30, than for the nonnapping group, at 24.56 (P = .003). Those in the napping group also had significantly higher scores in the orientation portion of the MoCA test, at 5.55 out of 6 points, compared with 5.41 for the nonnapping group (P = .006).
Those in the napping group scored significantly higher on the digit span and language fluency parts of the Neuropsychological Test Battery (P = .009 and .020, respectively).
Dementia was assessed with face-to-face visits with clinicians, but diagnoses of dementia were not different between the groups.
Triglycerides were found to be higher – though still in the normal range – in the napping group compared with the nonnapping group, 1.80 mmol/L to 1.75 mmol/L, the researchers found (P = .001). No differences were seen for HDL or LDL cholesterol levels, or in hypertension or diabetes, the researchers reported.
The authors noted that inflammation is likely an important feature in the relationship between napping and cognitive function. Inflammatory cytokines have been found to play a role in sleep disorders, and strong inflammatory responses can lead to adverse events, including cognitive impairment.
“Sleep is known to be a regulator of the immune response that counters these inflammatory mediators, whereas napping, in particular, is thought to be an evolved response to inflammation,” they said.
The average age of patients in the napping group was 72.8 years, slightly older than those in the nonnapping group at 71.3 years, and this was a significant difference (P = .016).
The researchers acknowledged that the study “could not show direct causality of napping, whether beneficial or harmful,” and that “a lack of detailed information regarding napping duration ... also limited the description of napping status.”
Junxin Li, PhD, RN, assistant professor at Johns Hopkins School of Nursing, Baltimore, who has studied napping and cognition, said that previous research generally supports a U-shaped relationship between napping and mental acuity, with shorter or medium-length naps benefiting cognition and no naps or naps that are too long being detrimental.
“This study looked at no nap versus naps of less than 2 hours and may not be able to capture this potential U-shaped association,” she said.
For clinicians, the duration, timing, frequency, and purpose of naps are important factors in making recommendations to patients, she said.
“For example, timing – napping in the early evening close to older adult’s bedtime may delay their bedtime and interfere with their nighttime sleep quality. Taking naps after lunchtime is hypothesized to provide the most therapeutic values to the health and usually recommended,” she said. Regular napping is better than “randomly dozing off,” Dr. Li added.
There are also cultural considerations – in east Asia, napping tends to be considered part of a healthy lifestyle, while in western countries it is not – and this could impact napping behaviors and how these behaviors affect cognition, she said.
Phyllis C. Zee, MD, PhD, director of the Center for Circadian and Sleep Medicine at the Northwestern University, Chicago, said the results are consistent with early cross-sectional studies that showed that regular, scheduled naps in the afternoon were associated with positive cognitive performance and lower cardiometabolic disease risk.
Dr. Zee noted that it’s important to recognize that the positive data are associated with naps that are planned, while older adults napping because of excess sleepiness are at a higher risk for cognitive impairment and other health issues.
The study authors, Dr. Li, and Dr. Zee reported no relevant financial disclosures.
according to a new study in General Psychiatry.
The findings add to those seen in other observational studies showing afternoon napping promotes cognitive function, said the authors of the paper, published in General Psychiatry.
“The prevalence of afternoon napping has been increasing in older adults much more than in younger individuals,” wrote Han Cai, MS, of the department of geriatrics at The Fourth People’s Hospital of Wuhu, Anhui, China, and coauthors. “The elderly individuals who took afternoon naps showed significantly higher cognitive performance compared with those who did not nap.”
The researchers enrolled 2,214 people in the study – all Han Chinese and aged 60 or older. Afternoon napping was considered any period of inactivity of at least 5 minutes but less than 2 hours after lunch and outside of the person’s main sleep schedule. Those who reported ever napping – 1,534 subjects – were included in the napping group, and the others – 680 – in the nonnapping group. Patients with major physical conditions were excluded.
The Montreal Cognitive Assessment (MoCA), the Mini-Mental State Examination (MMSE), and the Neuropsychological Test Battery (NTB) were used to measure cognitive function, and 739 patients agreed to blood tests for lipid values.
The average total MMSE score was higher for the napping group at 25.3 points out of 30, than for the nonnapping group, at 24.56 (P = .003). Those in the napping group also had significantly higher scores in the orientation portion of the MoCA test, at 5.55 out of 6 points, compared with 5.41 for the nonnapping group (P = .006).
Those in the napping group scored significantly higher on the digit span and language fluency parts of the Neuropsychological Test Battery (P = .009 and .020, respectively).
Dementia was assessed with face-to-face visits with clinicians, but diagnoses of dementia were not different between the groups.
Triglycerides were found to be higher – though still in the normal range – in the napping group compared with the nonnapping group, 1.80 mmol/L to 1.75 mmol/L, the researchers found (P = .001). No differences were seen for HDL or LDL cholesterol levels, or in hypertension or diabetes, the researchers reported.
The authors noted that inflammation is likely an important feature in the relationship between napping and cognitive function. Inflammatory cytokines have been found to play a role in sleep disorders, and strong inflammatory responses can lead to adverse events, including cognitive impairment.
“Sleep is known to be a regulator of the immune response that counters these inflammatory mediators, whereas napping, in particular, is thought to be an evolved response to inflammation,” they said.
The average age of patients in the napping group was 72.8 years, slightly older than those in the nonnapping group at 71.3 years, and this was a significant difference (P = .016).
The researchers acknowledged that the study “could not show direct causality of napping, whether beneficial or harmful,” and that “a lack of detailed information regarding napping duration ... also limited the description of napping status.”
Junxin Li, PhD, RN, assistant professor at Johns Hopkins School of Nursing, Baltimore, who has studied napping and cognition, said that previous research generally supports a U-shaped relationship between napping and mental acuity, with shorter or medium-length naps benefiting cognition and no naps or naps that are too long being detrimental.
“This study looked at no nap versus naps of less than 2 hours and may not be able to capture this potential U-shaped association,” she said.
For clinicians, the duration, timing, frequency, and purpose of naps are important factors in making recommendations to patients, she said.
“For example, timing – napping in the early evening close to older adult’s bedtime may delay their bedtime and interfere with their nighttime sleep quality. Taking naps after lunchtime is hypothesized to provide the most therapeutic values to the health and usually recommended,” she said. Regular napping is better than “randomly dozing off,” Dr. Li added.
There are also cultural considerations – in east Asia, napping tends to be considered part of a healthy lifestyle, while in western countries it is not – and this could impact napping behaviors and how these behaviors affect cognition, she said.
Phyllis C. Zee, MD, PhD, director of the Center for Circadian and Sleep Medicine at the Northwestern University, Chicago, said the results are consistent with early cross-sectional studies that showed that regular, scheduled naps in the afternoon were associated with positive cognitive performance and lower cardiometabolic disease risk.
Dr. Zee noted that it’s important to recognize that the positive data are associated with naps that are planned, while older adults napping because of excess sleepiness are at a higher risk for cognitive impairment and other health issues.
The study authors, Dr. Li, and Dr. Zee reported no relevant financial disclosures.