The Journal of Family Practice

Both a Wood lamp examination and a potassium hydroxide (KOH) prep returned negative results. Those findings, combined with the patient’s month-long antifungal medication adherence, helped to rule out other diagnoses. Based on history and examination, the patient was diagnosed with erythrasma.

Erythrasma is a skin infection caused by the gram-positive bacteria Corynebacterium minutissimum¹ that usually manifests in moist intertriginous areas. Sometimes it is secondary to fungal or yeast infections, local skin irritation due to friction, or due to maceration of the skin from persistent moisture. The Wood lamp examination can show coral-red fluorescence in erythrasma, but recent bathing (as in this case) may limit this finding.¹

The differential diagnosis of erythematous plaques in an intertriginous area includes inverse psoriasis. However, this patient had no nail changes, joint difficulties, or other rashes consistent with psoriasis. Macerated, erythematous inflammatory changes in intertriginous areas are always concerning for fungal infections (eg, yeast infection, tinea corporis), especially with the presence of any scale. In this case, the patient’s medication regimen helped to rule out these types of conditions.

First-line therapy for erythrasma includes topical antibiotics: clindamycin, erythromycin, mupirocin, and fusidic acid. Systemic antibiotics in the tetracycline family and macrolides may also be used but have a higher risk of adverse effects. Keeping the affected area dry is a useful adjunct to pharmacologic therapy.

The patient was treated with topical clindamycin bid for 7 days. By her 2-month follow-up appointment, there were no residual skin changes. Had the plaques persisted, the possibility of inverse psoriasis would have been revisited, with either presumptive treatment prescribed or biopsy performed to establish the diagnosis.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

Both a Wood lamp examination and a potassium hydroxide (KOH) prep returned negative results. Those findings, combined with the patient’s month-long antifungal medication adherence, helped to rule out other diagnoses. Based on history and examination, the patient was diagnosed with erythrasma.

Erythrasma is a skin infection caused by the gram-positive bacteria Corynebacterium minutissimum¹ that usually manifests in moist intertriginous areas. Sometimes it is secondary to fungal or yeast infections, local skin irritation due to friction, or due to maceration of the skin from persistent moisture. The Wood lamp examination can show coral-red fluorescence in erythrasma, but recent bathing (as in this case) may limit this finding.¹

The differential diagnosis of erythematous plaques in an intertriginous area includes inverse psoriasis. However, this patient had no nail changes, joint difficulties, or other rashes consistent with psoriasis. Macerated, erythematous inflammatory changes in intertriginous areas are always concerning for fungal infections (eg, yeast infection, tinea corporis), especially with the presence of any scale. In this case, the patient’s medication regimen helped to rule out these types of conditions.

First-line therapy for erythrasma includes topical antibiotics: clindamycin, erythromycin, mupirocin, and fusidic acid. Systemic antibiotics in the tetracycline family and macrolides may also be used but have a higher risk of adverse effects. Keeping the affected area dry is a useful adjunct to pharmacologic therapy.

The patient was treated with topical clindamycin bid for 7 days. By her 2-month follow-up appointment, there were no residual skin changes. Had the plaques persisted, the possibility of inverse psoriasis would have been revisited, with either presumptive treatment prescribed or biopsy performed to establish the diagnosis.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

Both a Wood lamp examination and a potassium hydroxide (KOH) prep returned negative results. Those findings, combined with the patient’s month-long antifungal medication adherence, helped to rule out other diagnoses. Based on history and examination, the patient was diagnosed with erythrasma.

Erythrasma is a skin infection caused by the gram-positive bacteria Corynebacterium minutissimum¹ that usually manifests in moist intertriginous areas. Sometimes it is secondary to fungal or yeast infections, local skin irritation due to friction, or due to maceration of the skin from persistent moisture. The Wood lamp examination can show coral-red fluorescence in erythrasma, but recent bathing (as in this case) may limit this finding.¹

The differential diagnosis of erythematous plaques in an intertriginous area includes inverse psoriasis. However, this patient had no nail changes, joint difficulties, or other rashes consistent with psoriasis. Macerated, erythematous inflammatory changes in intertriginous areas are always concerning for fungal infections (eg, yeast infection, tinea corporis), especially with the presence of any scale. In this case, the patient’s medication regimen helped to rule out these types of conditions.

First-line therapy for erythrasma includes topical antibiotics: clindamycin, erythromycin, mupirocin, and fusidic acid. Systemic antibiotics in the tetracycline family and macrolides may also be used but have a higher risk of adverse effects. Keeping the affected area dry is a useful adjunct to pharmacologic therapy.

The patient was treated with topical clindamycin bid for 7 days. By her 2-month follow-up appointment, there were no residual skin changes. Had the plaques persisted, the possibility of inverse psoriasis would have been revisited, with either presumptive treatment prescribed or biopsy performed to establish the diagnosis.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

A 4-mm punch biopsy confirmed that this was a case of blaschkitis. This uncommon condition is referred to as adult blaschkitis because it resembles lichen striatus, a linear erythematous papular eruption usually seen in children younger than 15 years of age that erupts along Blaschko lines. The biopsy in this case helped to rule out lichen planus, which can also manifest with an erythematous papular eruption along Blaschko lines.

Adult blaschkitis is thought to be a hypersensitivity reaction involving T cells. It has been linked to medication use, insect stings, trauma, and autoimmune disease.¹ The characteristic linear pattern is due to the inflammatory response following the Blaschko lines of keratinocytes that migrated during the embryonic phase.¹ Post-inflammatory hyperpigmentation is a frequent complication. Topical steroids often help with the itching, but do not usually make the lesions go away. There have been better results in reducing itching and lesion prominence with intralesional steroid injections, topical calcipotriol, or calcineurin inhibitors.¹ The inflammation usually spontaneously resolves over 3 to 12 months.

The patient was advised that the condition is benign and would likely resolve on its own over time. She was counseled that since the clobetasol was helping with her itching, she could use it (sparingly) as needed. She was cautioned that prolonged usage could lead to skin atrophy.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

A 4-mm punch biopsy confirmed that this was a case of blaschkitis. This uncommon condition is referred to as adult blaschkitis because it resembles lichen striatus, a linear erythematous papular eruption usually seen in children younger than 15 years of age that erupts along Blaschko lines. The biopsy in this case helped to rule out lichen planus, which can also manifest with an erythematous papular eruption along Blaschko lines.

Adult blaschkitis is thought to be a hypersensitivity reaction involving T cells. It has been linked to medication use, insect stings, trauma, and autoimmune disease.¹ The characteristic linear pattern is due to the inflammatory response following the Blaschko lines of keratinocytes that migrated during the embryonic phase.¹ Post-inflammatory hyperpigmentation is a frequent complication. Topical steroids often help with the itching, but do not usually make the lesions go away. There have been better results in reducing itching and lesion prominence with intralesional steroid injections, topical calcipotriol, or calcineurin inhibitors.¹ The inflammation usually spontaneously resolves over 3 to 12 months.

The patient was advised that the condition is benign and would likely resolve on its own over time. She was counseled that since the clobetasol was helping with her itching, she could use it (sparingly) as needed. She was cautioned that prolonged usage could lead to skin atrophy.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

A 4-mm punch biopsy confirmed that this was a case of blaschkitis. This uncommon condition is referred to as adult blaschkitis because it resembles lichen striatus, a linear erythematous papular eruption usually seen in children younger than 15 years of age that erupts along Blaschko lines. The biopsy in this case helped to rule out lichen planus, which can also manifest with an erythematous papular eruption along Blaschko lines.

Adult blaschkitis is thought to be a hypersensitivity reaction involving T cells. It has been linked to medication use, insect stings, trauma, and autoimmune disease.¹ The characteristic linear pattern is due to the inflammatory response following the Blaschko lines of keratinocytes that migrated during the embryonic phase.¹ Post-inflammatory hyperpigmentation is a frequent complication. Topical steroids often help with the itching, but do not usually make the lesions go away. There have been better results in reducing itching and lesion prominence with intralesional steroid injections, topical calcipotriol, or calcineurin inhibitors.¹ The inflammation usually spontaneously resolves over 3 to 12 months.

The patient was advised that the condition is benign and would likely resolve on its own over time. She was counseled that since the clobetasol was helping with her itching, she could use it (sparingly) as needed. She was cautioned that prolonged usage could lead to skin atrophy.

‌

Photo courtesy of Daniel Stulberg, MD. Text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.

The leading causes of death in the United States are cardiovascular disease (CVD) and cancer. CVD causes about 800,00 deaths per year (30% of all deaths), and cancer is responsible for about 600,000 deaths annually (21%).¹ Many adults—more than 50%—report regular use of dietary supplements, including multivitamins and minerals, to improve their overall health, believing that these supplements’ anti-inflammatory and antioxidative properties help prevent CVD and cancer.² However, this belief is not supported by evidence, according to the US Preventive Services Task Force.

What did the Task Force find? After a recent reassessment of the topic of vitamin and mineral supplementation, the Task Force reaffirmed its position from 2014: There is insufficient evidence to recommend the use of vitamins and minerals to prevent CVD and cancer.³

For most of the vitamins and minerals included in the systematic review—vitamins A, C, D, E, and K; B vitamins; calcium; iron; zinc; and selenium—the Task Force could not find sufficient evidence to make a recommendation. It is important to note that if any of these are taken at the recommended levels, there is no evidence of serious harm from using them.

However, there is good evidence to recommend against the use of beta carotene and vitamin E.³ For beta carotene, the harms outweigh the benefits: Its use is associated with an increase in the risk of CVD death, as well as an increased incidence of lung cancer in smokers and those with occupational exposure to asbestos. The evidence on vitamin E indicates that it simply does not provide any cancer or CVD mortality benefit.

How to advise patients. Both the US Department of Health and Human Services (DHHS) and the American Heart Association state that most nutritional needs can be met through the consumption of nutritional foods and beverages; supplements do not add any benefit for those who consume a healthy diet.⁴ The updated USPSTF recommendations support this approach for community-dwelling, nonpregnant adults.

For those adults who want to supplement their diets—or who need to do so because of an inability to achieve an adequate diet—urge them to follow the recommendations found in DHHS’s Dietary Guidelines for Americans, 2020-2025.⁴

The leading causes of death in the United States are cardiovascular disease (CVD) and cancer. CVD causes about 800,00 deaths per year (30% of all deaths), and cancer is responsible for about 600,000 deaths annually (21%).¹ Many adults—more than 50%—report regular use of dietary supplements, including multivitamins and minerals, to improve their overall health, believing that these supplements’ anti-inflammatory and antioxidative properties help prevent CVD and cancer.² However, this belief is not supported by evidence, according to the US Preventive Services Task Force.

What did the Task Force find? After a recent reassessment of the topic of vitamin and mineral supplementation, the Task Force reaffirmed its position from 2014: There is insufficient evidence to recommend the use of vitamins and minerals to prevent CVD and cancer.³

For most of the vitamins and minerals included in the systematic review—vitamins A, C, D, E, and K; B vitamins; calcium; iron; zinc; and selenium—the Task Force could not find sufficient evidence to make a recommendation. It is important to note that if any of these are taken at the recommended levels, there is no evidence of serious harm from using them.

However, there is good evidence to recommend against the use of beta carotene and vitamin E.³ For beta carotene, the harms outweigh the benefits: Its use is associated with an increase in the risk of CVD death, as well as an increased incidence of lung cancer in smokers and those with occupational exposure to asbestos. The evidence on vitamin E indicates that it simply does not provide any cancer or CVD mortality benefit.

How to advise patients. Both the US Department of Health and Human Services (DHHS) and the American Heart Association state that most nutritional needs can be met through the consumption of nutritional foods and beverages; supplements do not add any benefit for those who consume a healthy diet.⁴ The updated USPSTF recommendations support this approach for community-dwelling, nonpregnant adults.

For those adults who want to supplement their diets—or who need to do so because of an inability to achieve an adequate diet—urge them to follow the recommendations found in DHHS’s Dietary Guidelines for Americans, 2020-2025.⁴

The leading causes of death in the United States are cardiovascular disease (CVD) and cancer. CVD causes about 800,00 deaths per year (30% of all deaths), and cancer is responsible for about 600,000 deaths annually (21%).¹ Many adults—more than 50%—report regular use of dietary supplements, including multivitamins and minerals, to improve their overall health, believing that these supplements’ anti-inflammatory and antioxidative properties help prevent CVD and cancer.² However, this belief is not supported by evidence, according to the US Preventive Services Task Force.

What did the Task Force find? After a recent reassessment of the topic of vitamin and mineral supplementation, the Task Force reaffirmed its position from 2014: There is insufficient evidence to recommend the use of vitamins and minerals to prevent CVD and cancer.³

For most of the vitamins and minerals included in the systematic review—vitamins A, C, D, E, and K; B vitamins; calcium; iron; zinc; and selenium—the Task Force could not find sufficient evidence to make a recommendation. It is important to note that if any of these are taken at the recommended levels, there is no evidence of serious harm from using them.

However, there is good evidence to recommend against the use of beta carotene and vitamin E.³ For beta carotene, the harms outweigh the benefits: Its use is associated with an increase in the risk of CVD death, as well as an increased incidence of lung cancer in smokers and those with occupational exposure to asbestos. The evidence on vitamin E indicates that it simply does not provide any cancer or CVD mortality benefit.

How to advise patients. Both the US Department of Health and Human Services (DHHS) and the American Heart Association state that most nutritional needs can be met through the consumption of nutritional foods and beverages; supplements do not add any benefit for those who consume a healthy diet.⁴ The updated USPSTF recommendations support this approach for community-dwelling, nonpregnant adults.

For those adults who want to supplement their diets—or who need to do so because of an inability to achieve an adequate diet—urge them to follow the recommendations found in DHHS’s Dietary Guidelines for Americans, 2020-2025.⁴

Shave biopsy was consistent with a solitary periungual angiofibroma, often termed a Koenen tumor. These can manifest as a soft pink papule (as with this patient), sometimes with a distal keratinaceous tip. At times, the nail bed and nail plate may be deformed because of the angiofibroma.

Periungual angiofibromas can occur sporadically in children and adults, it was a solitary finding in this case. Importantly, periungual angiofibromas may also occur as a visible sign of a multisystem genetic disorder known as tuberous sclerosis complex (TSC). TSC causes benign tumors to develop throughout the body (eg, skin, brain, heart, lungs). The condition can be mild or lead to serious disabilities, including seizures and developmental delays.

In isolation, periungual angiofibromas are benign but occasionally hurt or bleed from light trauma. In such cases, or for cosmetic reasons, patients may seek treatments. Complete excision of the lesion may include the affected portion of the nail bed or matrix. This is more easily repaired when the lesion is on the lateral nail fold, facilitating an en bloc fusiform excision and matrixectomy.¹ Surgical excision of a lesion in the mid-proximal nail fold is much more likely to result in long-term nail deformity. Electrosurgery and various laser modalities have been successful as less invasive removal options.² While expensive, topical sirolimus 1% has been used successfully in sporadic angiofibromas and those associated with TSC.

The patient in this case underwent lateral nail fold excision with complete removal of the tumor and repair with a side-to-side closure.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Shave biopsy was consistent with a solitary periungual angiofibroma, often termed a Koenen tumor. These can manifest as a soft pink papule (as with this patient), sometimes with a distal keratinaceous tip. At times, the nail bed and nail plate may be deformed because of the angiofibroma.

Periungual angiofibromas can occur sporadically in children and adults, it was a solitary finding in this case. Importantly, periungual angiofibromas may also occur as a visible sign of a multisystem genetic disorder known as tuberous sclerosis complex (TSC). TSC causes benign tumors to develop throughout the body (eg, skin, brain, heart, lungs). The condition can be mild or lead to serious disabilities, including seizures and developmental delays.

In isolation, periungual angiofibromas are benign but occasionally hurt or bleed from light trauma. In such cases, or for cosmetic reasons, patients may seek treatments. Complete excision of the lesion may include the affected portion of the nail bed or matrix. This is more easily repaired when the lesion is on the lateral nail fold, facilitating an en bloc fusiform excision and matrixectomy.¹ Surgical excision of a lesion in the mid-proximal nail fold is much more likely to result in long-term nail deformity. Electrosurgery and various laser modalities have been successful as less invasive removal options.² While expensive, topical sirolimus 1% has been used successfully in sporadic angiofibromas and those associated with TSC.

The patient in this case underwent lateral nail fold excision with complete removal of the tumor and repair with a side-to-side closure.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Shave biopsy was consistent with a solitary periungual angiofibroma, often termed a Koenen tumor. These can manifest as a soft pink papule (as with this patient), sometimes with a distal keratinaceous tip. At times, the nail bed and nail plate may be deformed because of the angiofibroma.

Periungual angiofibromas can occur sporadically in children and adults, it was a solitary finding in this case. Importantly, periungual angiofibromas may also occur as a visible sign of a multisystem genetic disorder known as tuberous sclerosis complex (TSC). TSC causes benign tumors to develop throughout the body (eg, skin, brain, heart, lungs). The condition can be mild or lead to serious disabilities, including seizures and developmental delays.

In isolation, periungual angiofibromas are benign but occasionally hurt or bleed from light trauma. In such cases, or for cosmetic reasons, patients may seek treatments. Complete excision of the lesion may include the affected portion of the nail bed or matrix. This is more easily repaired when the lesion is on the lateral nail fold, facilitating an en bloc fusiform excision and matrixectomy.¹ Surgical excision of a lesion in the mid-proximal nail fold is much more likely to result in long-term nail deformity. Electrosurgery and various laser modalities have been successful as less invasive removal options.² While expensive, topical sirolimus 1% has been used successfully in sporadic angiofibromas and those associated with TSC.

The patient in this case underwent lateral nail fold excision with complete removal of the tumor and repair with a side-to-side closure.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Hot Topics in Primary Care 2022 is a resource that explores the newest developments in primary care topics that impact your daily clinical practice. 

Click on the link below to access the entire supplement. You can also click on the video panes below to view brief summaries of individual chapters. Titles above the video panes link directly to each article.

• A Paradigm Shift for Asthma Care
• Common Questions on Continuous Glucose Monitoring in Primary Care 

  

• Detecting and Managing ASCVD in Women: A Focus on Statins
• Improving Detection and Management of Anemia in CKD
• OTC Analgesics vs Opioids for Pain Management
• Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes
• Practical Screening for Islet Autoantibodies: The Time Has Come
• Reducing Thrombotic Risk From Polyvascular Disease in Primary Care
• Strategies to Improve Outcomes in COPD
• The Evolving Landscape of ASCVD Risk Among Patients With HIV
• The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines
• The Role of Eggs in Healthy Diets
• Update on the Gut Microbiome for the Primary Care Clinician
• Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease
• Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care

This supplement offers the opportunity to earn a total of 4 continuing medical education (CME) credits. Credit is awarded for successful completion of the evaluation after reading the article. The links can be found within the supplement on the first page of each article where CME credits are offered. 
 

Click here to read Hot Topics in Primary Care 2022

This supplement to The Journal of Family Practice was sponsored by the Primary Care Education Consortium and Primary Care Metabolic Group.
Check out these short video segments, which were prepared by the supplement authors and summarize the individual articles. 
The title above each video links to the related article.

A Paradigm Shift for Asthma Care, Njira Lugogo, MD; Neil Skolnik, MD; Yihui Jiang, DO

 

Common Questions on Continuous Glucose Monitoring in Primary Care, Eden M. Miller, DO

 

Detecting and Managing ASCVD in Women: A Focus on Statins, Pam Kushner, MD

 

Improving Detection and Management of Anemia in CKD, Steven Fishbane, MD; Stephen Brunton, MD, FAAFP

 

OTC Analgesics vs Opioids for Pain Management, Gary M. Ruoff, MD

 

Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes, Jacqueline M. Champlain, MD

 

Practical Screening for Islet Autoantibodies: The Time Has Come, Timothy Reid, MD

 

Reducing Thrombotic Risk From Polyvascular Disease in Primary Care, Stephen Brunton, MD, FAAFP

 

Strategies to Improve Outcomes in COPD, Barbara Yawn, MD, MSc, FAAFP

 

The Evolving Landscape of ASCVD Risk Among Patients With HIV, Carlos Malvestutto, MD, MPH

 

The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines, Lawrence Eichenfield, MD; Adelaide Hebert, MD; Seemal R. Desai, MD; Moise L. Levy, MD; Anthony J. Mancini, MD; Zakiya Pressley Rice, MD; Jeffrey Sugarman, MD, PhD; Andrea Zaenglein, MD

 

The Role of Eggs in Healthy Diets, Maria Luz Fernandez, PhD

 

Update on the Gut Microbiome for the Primary Care Clinician, Eden M. Miller, DO

 

Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease, Gary Small, MD

 

Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care, George Bakris, MD

Hot Topics in Primary Care 2022 is a resource that explores the newest developments in primary care topics that impact your daily clinical practice. 

Click on the link below to access the entire supplement. You can also click on the video panes below to view brief summaries of individual chapters. Titles above the video panes link directly to each article.

• A Paradigm Shift for Asthma Care
• Common Questions on Continuous Glucose Monitoring in Primary Care 

  

• Detecting and Managing ASCVD in Women: A Focus on Statins
• Improving Detection and Management of Anemia in CKD
• OTC Analgesics vs Opioids for Pain Management
• Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes
• Practical Screening for Islet Autoantibodies: The Time Has Come
• Reducing Thrombotic Risk From Polyvascular Disease in Primary Care
• Strategies to Improve Outcomes in COPD
• The Evolving Landscape of ASCVD Risk Among Patients With HIV
• The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines
• The Role of Eggs in Healthy Diets
• Update on the Gut Microbiome for the Primary Care Clinician
• Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease
• Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care

This supplement offers the opportunity to earn a total of 4 continuing medical education (CME) credits. Credit is awarded for successful completion of the evaluation after reading the article. The links can be found within the supplement on the first page of each article where CME credits are offered. 
 

Click here to read Hot Topics in Primary Care 2022

This supplement to The Journal of Family Practice was sponsored by the Primary Care Education Consortium and Primary Care Metabolic Group.
Check out these short video segments, which were prepared by the supplement authors and summarize the individual articles. 
The title above each video links to the related article.

A Paradigm Shift for Asthma Care, Njira Lugogo, MD; Neil Skolnik, MD; Yihui Jiang, DO

 

Common Questions on Continuous Glucose Monitoring in Primary Care, Eden M. Miller, DO

 

Detecting and Managing ASCVD in Women: A Focus on Statins, Pam Kushner, MD

 

Improving Detection and Management of Anemia in CKD, Steven Fishbane, MD; Stephen Brunton, MD, FAAFP

 

OTC Analgesics vs Opioids for Pain Management, Gary M. Ruoff, MD

 

Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes, Jacqueline M. Champlain, MD

 

Practical Screening for Islet Autoantibodies: The Time Has Come, Timothy Reid, MD

 

Reducing Thrombotic Risk From Polyvascular Disease in Primary Care, Stephen Brunton, MD, FAAFP

 

Strategies to Improve Outcomes in COPD, Barbara Yawn, MD, MSc, FAAFP

 

The Evolving Landscape of ASCVD Risk Among Patients With HIV, Carlos Malvestutto, MD, MPH

 

The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines, Lawrence Eichenfield, MD; Adelaide Hebert, MD; Seemal R. Desai, MD; Moise L. Levy, MD; Anthony J. Mancini, MD; Zakiya Pressley Rice, MD; Jeffrey Sugarman, MD, PhD; Andrea Zaenglein, MD

 

The Role of Eggs in Healthy Diets, Maria Luz Fernandez, PhD

 

Update on the Gut Microbiome for the Primary Care Clinician, Eden M. Miller, DO

 

Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease, Gary Small, MD

 

Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care, George Bakris, MD

Hot Topics in Primary Care 2022 is a resource that explores the newest developments in primary care topics that impact your daily clinical practice. 

Click on the link below to access the entire supplement. You can also click on the video panes below to view brief summaries of individual chapters. Titles above the video panes link directly to each article.

• A Paradigm Shift for Asthma Care
• Common Questions on Continuous Glucose Monitoring in Primary Care 

  

• Detecting and Managing ASCVD in Women: A Focus on Statins
• Improving Detection and Management of Anemia in CKD
• OTC Analgesics vs Opioids for Pain Management
• Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes
• Practical Screening for Islet Autoantibodies: The Time Has Come
• Reducing Thrombotic Risk From Polyvascular Disease in Primary Care
• Strategies to Improve Outcomes in COPD
• The Evolving Landscape of ASCVD Risk Among Patients With HIV
• The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines
• The Role of Eggs in Healthy Diets
• Update on the Gut Microbiome for the Primary Care Clinician
• Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease
• Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care

This supplement offers the opportunity to earn a total of 4 continuing medical education (CME) credits. Credit is awarded for successful completion of the evaluation after reading the article. The links can be found within the supplement on the first page of each article where CME credits are offered. 
 

Click here to read Hot Topics in Primary Care 2022

This supplement to The Journal of Family Practice was sponsored by the Primary Care Education Consortium and Primary Care Metabolic Group.
Check out these short video segments, which were prepared by the supplement authors and summarize the individual articles. 
The title above each video links to the related article.

A Paradigm Shift for Asthma Care, Njira Lugogo, MD; Neil Skolnik, MD; Yihui Jiang, DO

 

Common Questions on Continuous Glucose Monitoring in Primary Care, Eden M. Miller, DO

 

Detecting and Managing ASCVD in Women: A Focus on Statins, Pam Kushner, MD

 

Improving Detection and Management of Anemia in CKD, Steven Fishbane, MD; Stephen Brunton, MD, FAAFP

 

OTC Analgesics vs Opioids for Pain Management, Gary M. Ruoff, MD

 

Practical Considerations for Use of Insulin/Glucagon-Like Peptide 1 Receptor Agonist Combinations in Older Adults With Type 2 Diabetes, Jacqueline M. Champlain, MD

 

Practical Screening for Islet Autoantibodies: The Time Has Come, Timothy Reid, MD

 

Reducing Thrombotic Risk From Polyvascular Disease in Primary Care, Stephen Brunton, MD, FAAFP

 

Strategies to Improve Outcomes in COPD, Barbara Yawn, MD, MSc, FAAFP

 

The Evolving Landscape of ASCVD Risk Among Patients With HIV, Carlos Malvestutto, MD, MPH

 

The New Face of Preadolescent and Adolescent Acne: Beyond the Guidelines, Lawrence Eichenfield, MD; Adelaide Hebert, MD; Seemal R. Desai, MD; Moise L. Levy, MD; Anthony J. Mancini, MD; Zakiya Pressley Rice, MD; Jeffrey Sugarman, MD, PhD; Andrea Zaenglein, MD

 

The Role of Eggs in Healthy Diets, Maria Luz Fernandez, PhD

 

Update on the Gut Microbiome for the Primary Care Clinician, Eden M. Miller, DO

 

Updates in the Management of Mild Cognitive Impairment and Alzheimer Disease, Gary Small, MD

 

Use of SGLT-2 Inhibitors for Chronic Kidney Disease in Primary Care, George Bakris, MD

A 4-mm punch biopsy performed on the central portion of a lesion revealed thickening of the epidermis and altered collagen in the dermis consistent with acquired reactive perforating collagenosis (ARPC).

ARPC is strongly associated with diabetes, renal disease, and malignancy. ARPC manifests as an eruption of intensely pruritic papules to small plaques (with a central plug or firm dry depression) on the trunk, or more commonly, on the extremities. The etiology is unclear but altered collagen from systemic disease, trauma, or cold exposure may trigger collagen elimination.¹ Secondary infection may occur due to the intensity of itching. ARPC develops in adulthood; epidemiologic data are lacking and prevalence has not been systematically assessed.²

Treatment approaches are based on small case reports and case series. Common antipruritic therapies, such as topical and intralesional steroids, oral antihistamines, and vitamin-D analogues, have had mixed success. UV therapy is effective for nephrogenic pruritus; case reports suggest it has also been helpful for ARPC. Similarly, keratolytics and topical and systemic retinoids have shown promise. Allopurinol, which reduces free radicals, has also demonstrated its utility.³

This patient was started on topical triamcinolone 0.1% cream bid and narrowband UV-B phototherapy 3 times weekly with marked improvement in her itching. Lesions decreased in number over 3 months of follow-up but did not completely resolve.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

A 4-mm punch biopsy performed on the central portion of a lesion revealed thickening of the epidermis and altered collagen in the dermis consistent with acquired reactive perforating collagenosis (ARPC).

ARPC is strongly associated with diabetes, renal disease, and malignancy. ARPC manifests as an eruption of intensely pruritic papules to small plaques (with a central plug or firm dry depression) on the trunk, or more commonly, on the extremities. The etiology is unclear but altered collagen from systemic disease, trauma, or cold exposure may trigger collagen elimination.¹ Secondary infection may occur due to the intensity of itching. ARPC develops in adulthood; epidemiologic data are lacking and prevalence has not been systematically assessed.²

Treatment approaches are based on small case reports and case series. Common antipruritic therapies, such as topical and intralesional steroids, oral antihistamines, and vitamin-D analogues, have had mixed success. UV therapy is effective for nephrogenic pruritus; case reports suggest it has also been helpful for ARPC. Similarly, keratolytics and topical and systemic retinoids have shown promise. Allopurinol, which reduces free radicals, has also demonstrated its utility.³

This patient was started on topical triamcinolone 0.1% cream bid and narrowband UV-B phototherapy 3 times weekly with marked improvement in her itching. Lesions decreased in number over 3 months of follow-up but did not completely resolve.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

A 4-mm punch biopsy performed on the central portion of a lesion revealed thickening of the epidermis and altered collagen in the dermis consistent with acquired reactive perforating collagenosis (ARPC).

ARPC is strongly associated with diabetes, renal disease, and malignancy. ARPC manifests as an eruption of intensely pruritic papules to small plaques (with a central plug or firm dry depression) on the trunk, or more commonly, on the extremities. The etiology is unclear but altered collagen from systemic disease, trauma, or cold exposure may trigger collagen elimination.¹ Secondary infection may occur due to the intensity of itching. ARPC develops in adulthood; epidemiologic data are lacking and prevalence has not been systematically assessed.²

Treatment approaches are based on small case reports and case series. Common antipruritic therapies, such as topical and intralesional steroids, oral antihistamines, and vitamin-D analogues, have had mixed success. UV therapy is effective for nephrogenic pruritus; case reports suggest it has also been helpful for ARPC. Similarly, keratolytics and topical and systemic retinoids have shown promise. Allopurinol, which reduces free radicals, has also demonstrated its utility.³

This patient was started on topical triamcinolone 0.1% cream bid and narrowband UV-B phototherapy 3 times weekly with marked improvement in her itching. Lesions decreased in number over 3 months of follow-up but did not completely resolve.

‌

Text courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. Photos courtesy of Jonathan Karnes, MD (copyright retained).

Ordering and interpreting tests is at the heart of what we do as family physicians. Ordering tests judiciously and interpreting them accurately is not easy. The Choosing Wisely campaign¹ has focused our attention on the need to think carefully before ordering tests, whether they be laboratory tests or imaging. Before ordering any test, one should always ask: Is the result of this test going to help me make better decisions about managing this patient?

I would like to highlight and expand on 2 problematic issues Kaminski and Venkat raise in their excellent article on testing in this issue of JFP.²

One should always ask: Is the result of this test going to help me make better decisions?

First, they advise us to know the pretest probability of a disease before we order a test. If we order a test on a patient for whom the probability of disease is very low, a positive result is likely to be a false-positive and mislead us into thinking the patient has the disease when he does not. If we order a test for a patient with a high probability of disease and the result is negative, there is great danger of a false-­negative. We might think the patient does not have the disease, but she does.

There is a deeper problem here, however. Primary care physicians are notorious for overestimating disease probability. In a recent study, primary care clinicians overestimated the pretest probability of disease 2- to 10-fold in scenarios involving 4 common diagnoses: breast cancer, coronary artery disease (CAD), pneumonia, and urinary tract infection.³ Even after receiving a negative test result, clinicians still overestimated the chance of disease in all the scenarios. For example, when presented with a 43-year-old premenopausal woman with atypical chest pain and a normal electrocardiogram, clinicians’ average estimate of the probability of CAD was 10%—considerably higher than true estimates of 1% to 4.4%.³

To improve your accuracy in judging pretest probabilities, see the diagnostic test calculators in Essential Evidence Plus (www.essentialevidenceplus.com/).

Secondly, Kaminski and Venkat advise us to try to avoid the testing cascade.² The associated dangers to patients are considerable. For a cautionary tale, I recommend you read the essay by Michael B. Rothberg, MD, MPH, called “The $50,000 Physical”.⁴ Dr. Rothberg describes the testing cascade his 85-year-old father experienced, which led to a liver biopsy that nearly killed him from post-biopsy bleeding. Always remember: Testing is a double-edged sword. It can help—or harm—your patients.

Ordering and interpreting tests is at the heart of what we do as family physicians. Ordering tests judiciously and interpreting them accurately is not easy. The Choosing Wisely campaign¹ has focused our attention on the need to think carefully before ordering tests, whether they be laboratory tests or imaging. Before ordering any test, one should always ask: Is the result of this test going to help me make better decisions about managing this patient?

I would like to highlight and expand on 2 problematic issues Kaminski and Venkat raise in their excellent article on testing in this issue of JFP.²

One should always ask: Is the result of this test going to help me make better decisions?

First, they advise us to know the pretest probability of a disease before we order a test. If we order a test on a patient for whom the probability of disease is very low, a positive result is likely to be a false-positive and mislead us into thinking the patient has the disease when he does not. If we order a test for a patient with a high probability of disease and the result is negative, there is great danger of a false-­negative. We might think the patient does not have the disease, but she does.

There is a deeper problem here, however. Primary care physicians are notorious for overestimating disease probability. In a recent study, primary care clinicians overestimated the pretest probability of disease 2- to 10-fold in scenarios involving 4 common diagnoses: breast cancer, coronary artery disease (CAD), pneumonia, and urinary tract infection.³ Even after receiving a negative test result, clinicians still overestimated the chance of disease in all the scenarios. For example, when presented with a 43-year-old premenopausal woman with atypical chest pain and a normal electrocardiogram, clinicians’ average estimate of the probability of CAD was 10%—considerably higher than true estimates of 1% to 4.4%.³

To improve your accuracy in judging pretest probabilities, see the diagnostic test calculators in Essential Evidence Plus (www.essentialevidenceplus.com/).

Secondly, Kaminski and Venkat advise us to try to avoid the testing cascade.² The associated dangers to patients are considerable. For a cautionary tale, I recommend you read the essay by Michael B. Rothberg, MD, MPH, called “The $50,000 Physical”.⁴ Dr. Rothberg describes the testing cascade his 85-year-old father experienced, which led to a liver biopsy that nearly killed him from post-biopsy bleeding. Always remember: Testing is a double-edged sword. It can help—or harm—your patients.

Ordering and interpreting tests is at the heart of what we do as family physicians. Ordering tests judiciously and interpreting them accurately is not easy. The Choosing Wisely campaign¹ has focused our attention on the need to think carefully before ordering tests, whether they be laboratory tests or imaging. Before ordering any test, one should always ask: Is the result of this test going to help me make better decisions about managing this patient?

I would like to highlight and expand on 2 problematic issues Kaminski and Venkat raise in their excellent article on testing in this issue of JFP.²

One should always ask: Is the result of this test going to help me make better decisions?

First, they advise us to know the pretest probability of a disease before we order a test. If we order a test on a patient for whom the probability of disease is very low, a positive result is likely to be a false-positive and mislead us into thinking the patient has the disease when he does not. If we order a test for a patient with a high probability of disease and the result is negative, there is great danger of a false-­negative. We might think the patient does not have the disease, but she does.

There is a deeper problem here, however. Primary care physicians are notorious for overestimating disease probability. In a recent study, primary care clinicians overestimated the pretest probability of disease 2- to 10-fold in scenarios involving 4 common diagnoses: breast cancer, coronary artery disease (CAD), pneumonia, and urinary tract infection.³ Even after receiving a negative test result, clinicians still overestimated the chance of disease in all the scenarios. For example, when presented with a 43-year-old premenopausal woman with atypical chest pain and a normal electrocardiogram, clinicians’ average estimate of the probability of CAD was 10%—considerably higher than true estimates of 1% to 4.4%.³

To improve your accuracy in judging pretest probabilities, see the diagnostic test calculators in Essential Evidence Plus (www.essentialevidenceplus.com/).

Secondly, Kaminski and Venkat advise us to try to avoid the testing cascade.² The associated dangers to patients are considerable. For a cautionary tale, I recommend you read the essay by Michael B. Rothberg, MD, MPH, called “The $50,000 Physical”.⁴ Dr. Rothberg describes the testing cascade his 85-year-old father experienced, which led to a liver biopsy that nearly killed him from post-biopsy bleeding. Always remember: Testing is a double-edged sword. It can help—or harm—your patients.

A 55-YEAR-OLD MAN with hypertension and untreated hepatitis C virus (HCV) was referred to the Dermatology Clinic after reporting a 2-year history of photosensitivity and intermittent episodes of blistering and scars on the dorsal side of his hands and feet. No alcohol consumption or drug use was reported.

Physical examination revealed small and shallow erosions on the dorsal aspect of the hands and feet (but no visible blisters) and milium cysts (FIGURE 1A). Additionally, hypertrichosis and hyperpigmentation were observed in the zygomatic areas (FIGURE 1B). Complete blood count and kidney function test results were within normal ranges. Liver function tests showed slightly elevated levels of alanine aminotransferase (79 U/L; normal range, 0-41 U/L), aspartate aminotransferase (62 U/L; normal range, 0-40 U/L), and ferritin (121 ng/mL; normal range, 30-100 ng/mL). Serologies for syphilis, HIV, and hepatitis B virus were negative.

WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?

The clinical presentation, along with the elevated laboratory values, suggested that this might be a case of porphyria cutanea tarda (PCT). Therefore, a sample of the patient’s urine was examined under Wood lamp and compared to a sample from a healthy control. In the sample of urine from our patient, a vivid red-pink fluorescence could be visualized under the lamp (FIGURE 2), confirming the diagnosis.

The porphyrias are a group of metabolic diseases that affect the heme biosynthesis. They can be classified into 1 of 3 groups, according to clinical features:

• acute hepatic porphyrias, with neurovisceral symptoms (eg, acute intermittent porphyria),
• nonblistering cutaneous porphyrias, with severe photosensitivity but without bullae formation (eg, erythropoietic protoporphyria), or
• blistering cutaneous porphyrias (eg, PCT, hepatoerythropoietic porphyria, and variegate porphyria).

PCT is the most common type of porphyria, with a global prevalence of 1 per 10,000 people.^1,2 It affects adults after the third or fourth decade of life.

Porphyria cutanea tarda has a global prevalance of 1 per 10,000 people.

PCT involves dysfunction of the uroporphyrinogen decarboxylase enzyme (UROD), the fifth enzyme in heme biosynthesis, which catalyzes the conversion of uroporphyrinogen to coproporphyrinogen. This dysfunction causes the accumulation of porphyrinogens that are auto-oxidized to photosensitizing porphyrins.^1-4 PCT can be classified as “sporadic” or “familial” based on the absence or presence of UROD mutation. Approximately 80% of cases of PCT are sporadic.²

In sporadic PCT, triggers for UROD dysfunction include alcohol use, use of estrogens, hemochromatosis or iron overload, chronic HCV infection, and HIV infection.^1-4 HCV (which this patient had) is the most common infection associated with sporadic PCT, with a prevalence of about 50% among these patients.⁵

Continue to: Dermatologic manifestations of PCT

Dermatologic manifestations of PCT include photosensitivity, skin fragility, vesicles, bullae, erosions, and crusts observed in sun-exposed areas. A nonvirilizing type of hypertrichosis may appear prominently on the temples and the cheeks.^2-4 After blisters rupture, atrophy and scarring occur. Milia cysts can form on the dorsal side of the hands and fingers. Less common manifestations include pruritus, scarring alopecia, sclerodermatous changes, and periorbital purple-red suffusion.

Hepatic involvement is demonstrated with elevated serum transaminases and ­gamma-glutamyl transpeptidase. Hepatomegaly is common, and cirrhosis manifests in 30% to 40% of patients.^2-5 On liver biopsy, some degree of siderosis is found in 80% of patients with PCT, and most of them have increased levels of serum iron. The incidence of hepatocellular carcinoma in patients with PCT is greater than in patients with other liver diseases.²

A Wood lamp can be a useful diagnostic first step

Plasma or urine porphyrin lab tests are the gold standard for PCT diagnosis. These tests can be followed by more specific tests (eg, porphyrin fractionation) to exclude other forms of porphyria. However, if plasma or urine porphyrin testing is not readily available, a good first step is a Wood lamp exam, which can be performed on urine or stool. (Plasma or urine porphyrin testing may ultimately be necessary if there is doubt about the diagnosis following the Wood lamp screening.) Histopathologic examination does not confirm the diagnosis of PCT⁴; however, it can be helpful in differential diagnosis.

Wood lamp is a source of long-wave UV light (320 to 400 nm), visualized as a purple or violet light. When porphyrins are present in a urine sample, a red-pink fluorescence may be seen.^3,4,6 The Wood lamp examination should be performed in a completely dark room after the lamp has been warmed up for about 1 minute; time should be allowed for the clinician’s vision to adapt to the dark.⁶ There are no data regarding the sensitivity or specificity of the Wood lamp test in the diagnosis of PCT.

These conditions also cause skin fragility and photosensitivity

The differential diagnosis for PCT includes diseases that also cause skin fragility, blistering, or photosensitivity, such as pseudoporphyria, bullous systemic lupus erythematosus (SLE), and epidermolysis bullosa acquisita (EBA).³

Continue to: In pseudoporphyria

In pseudoporphyria, the clinical findings may be indistinguishable from PCT. Thus, the patient’s history will be especially important; suspect pseudoporphyria if the patient has a history of chronic renal failure or use of a photosensitizing drug.^1,3

Bullous SLE usually manifests with systemic involvement and widespread, tense bullae. Serologic investigation will demonstrate the presence of antinuclear antibodies in high titers (> 1:80), as well as other circulating autoantibodies.

Skin lesions of EBA usually manifest with skin fragility and noninflammatory tense bullae in traumatized skin, such as the extensor surfaces of the hands, feet, and fingers.

None of the above-mentioned diagnoses manifest with hypertrichosis or red-pink fluorescent urine on Wood lamp, and results of porphyrin studies would be normal.³

Address triggers, provide treatment

Once the diagnosis is confirmed, steps must be taken to avoid triggering factors, such as any alcohol consumption, use of estrogen, sun exposure (until plasma porphyrin levels are normal), and potential sources of excessive iron intake.

If plasma or urine porphyrin testing is not readily available, a good first step is a Wood lamp exam.

Two therapeutic options are available for treating PCT—whether it’s sporadic or familial. Phlebotomy sessions reduce iron overload and iron depletion and may prevent the formation of a porphomethene inhibitor of UROD. The other treatment option is antimalarial agents—usually hydroxychloroquine— and is indicated for patients with lower serum ferritin levels.^1-4 In patients with HCV-associated PCT, effective treatment of the infection has resulted in resolution of the PCT, in some cases.³

Treatment involving phlebotomy or an antimalarial agent can be stopped when plasma porphyrins reach normal levels.

Our patient was initially managed with 2 sessions of phlebotomy. He subsequently received treatment for the HCV infection at another hospital.