Psychosis and catatonia after dancing with a dangerous partner

CASE Rigid, frightened, and mute
Mr. D, age 23, presents for evaluation immediately after discharge from another hospital, where he had been treated for altered mental status.

Ten days earlier, Mr. D’s friends obtained 2C-B (2,5-dimethoxy-4-bromophenethylamine), from the “Darknet,” an underground niche of the Internet. He ingested 20 mg of 2C-B in pow­der form. Although his friends recovered from a “safe trip,” Mr. D decompensated rapidly over the next few days with persistent psychosis, experiencing both auditory and visual halluci­nations. He is “acting strange“ at work, and try­ing to find “hidden codes” in data. Mr. D also has persistent thought disorganization. He speaks of “connections” between people and things, and says that he is an alien in a spaceship. His friends and family report that he is talking rap­idly and is sleeping only 2 or 3 hours each night. Mr. D abruptly quit his job as an analyst a few days after taking the drug.

Mr. D is a single, Ivy League-educated man and is described as hardworking and analyti­cal. His family denies any recent mood changes or life stressors. They report that 1 month ago, Mr. D began smoking marijuana daily. He has no significant medical or psychiatric history, and no family history of psychiatric disorders.

What is your most likely diagnosis for Mr. D?
   a) delirium due to a general medical condition
   b) substance-induced psychotic disorder
   c) catatonia due to a general medical condition
   d) schizophrenia
   e) bipolar I disorder, currently manic, with psychosis

The authors’ observations
Ring-substituted phenethylamines, com­monly known as 2Cs, are designer drugs that are emerging as new substances of abuse.¹ 2C-B belongs to the phenethyl­amine subclass of monoamine alkaloids that includes more familiar drugs such as amphetamines, methamphetamines, and 3,4-methylenedioxy-methamphetamine (MDMA).² It was first synthesized in 1974 by Alexander Shulgin, later described in his book Phenethylamines I Have Known and Loved: A Chemical Love Story, and its hallucinogenic activity is reported to be similar to LSD, mescaline, and psilocybin.³ The literature is scant on the acute effects of 2C intoxication or long-term sequelae of 2C ingestion.¹ Most available information regarding the pharmacology of 2C-B comes from users who have reported their drug experiences on blogs, Web sites and forums, and in the media.⁴

2C-B usually is taken orally in powder or tablet form, in a dose of 10 to 50 mg.⁴ After an onset period of 20 to 90 minutes, the drug’s effect reaches maximum effect in 15 to 30 minutes, then plateaus for 2 to 7 hours, and comes down within 1 to 2 hours.⁴ 2C-B is known to be orally active, and its halluci­nogenic effects are mediated by its actions as a partial serotonin 5HT-2A and 5HT-2C receptor agonist.⁵ Entactogenic-stimulating effects have been reported at low doses (4 to 10 mg), whereas visual hallucinations with intense col­ors and object distortion have been reported at moderate doses (10 to 20 mg).⁴

2C-B, which users often take at parties or raves, appeared on the drug market in the mid 1980s and early 1990s under the names Nexus, Erox, Performax, Toonies, Bromo, Spectrum, and Venus and marketed as a replacement for MDMA after it became a Schedule I drug in the United States.4,6 Some users consume 2C-B in combination with other illicit drugs, including MDMA (called a “party pack”) or LSD (referred to as a “banana split”).⁶

According to the U.S. Drug Enforcement Agency, law enforcement authorities first seized 2C-B laboratories in California in 1986 and Arizona in 1992.⁶ Distribution of the drug has been sporadic since it became Schedule I in 1995, and it has been seized from several states, including Virginia, Nevada, Maine, Illinois, Missouri, South Dakota, and Kansas.⁶

EXAMINATION Passive and mute
On examination, Mr. D is lying in bed with eyes closed and extremities extended in an odd, rigid posture. He is resistant to attempts at passive movement, is nonresponsive to verbal commands, and is mute. A review of vital signs shows tachycardia, 110 beats per minute, but the physical exam is otherwise unremark­able. His Bush-Francis Catatonia Rating Scale (BFCRS) score is 17, indicating a diagnosis of catatonia. Mini-Mental Status Examination cannot be completed because Mr. D is unable to participate.

Laboratory studies reveal an elevated cre­atinine kinase (CK) level of 356 U/L. Results of a complete blood count, comprehensive met­abolic panel, urinalysis, and thyroid-stimulat­ing hormone are normal. Blood alcohol level is <10 mg/dL. Acetaminophen and salicylate levels are normal (<5 mg/dL). Records from his recent hospitalization reveal normal head CT, chest radiography, EEG, and urinalysis, and a negative urine drug screen.

What is the next step in managing Mr. D’s catatonic symptoms?
   a) IV normal saline
   b) IV lorazepam
   c) emergent electroconvulsive therapy (ECT)
   d) IM haloperidol
   e) IM olanzapine

 

TREATMENT Saline and psychotropics
While in the emergency room, Mr. D receives 2 L of IV saline. His CK level falls to 137 U/L. A challenge with IV lorazepam, 2 mg, also is per­formed. Mr. D becomes talkative and follows commands with fluid movements, but his dis­organized, delusional thoughts persist. BFCRS score has improved to 9 (Table 1). He is admitted to the psychiatric unit and started on oral lorazepam, 2 mg, 3 times daily, for catato­nia, and olanzapine, 10 mg/d, for psychosis.

The differential diagnosis for Mr. D’s psy­chosis includes substance-induced psychotic disorder, schizophrenia, bipolar disorder, and psychosis with another organic cause (Table 2).⁷ Further medical workup is com­pleted, including a urine drug screen, testing for HIV, hepatitis B, syphilis, lead and heavy metals, ceruloplasmin, vitamin B₁₂, folate, antinuclear antibody, sedimentation rate, and brain MRI. Cannabinoids are detected in his urine drug screen. Another urine sample is sent to an outside lab to test for several synthetic drugs, including MDMA, 3,4-methylenedioxy- N-ethyl-amphetamine, 2C-B, 2C-C, 2C-I, and 2C-P, results of which also are negative.

By the second day of hospitalization, Mr. D appears less disorganized but contin­ues to complain of “scrambled thoughts” and appears guarded. Despite initial response to IV lorazepam and its continuation in oral form, over the next day Mr. D appears more psychomotor-slowed, with motor stiffness. His score on the BFCRS increases, with sig­nificant posturing; vital signs remain stable, however.

What is your next step in managing his catatonic symptoms?
   a) increase olanzapine
   b) decrease olanzapine
   c) decrease lorazepam
   d) emergent ECT
   e) switch to haloperidol

The authors’ observations
Although catatonia can be associated with a mood or psychotic disorder, it also can be induced by a medication or gen­eral medical condition (Table 3).⁸ It is thought that catatonia is associated with decreased γ-aminobutyric acid (GABA) and dopamine D2 receptor activity, and increased N-methyl-d-aspartate (NMDA) receptor activity.⁹ Antipsychotics could worsen catatonia through D2 blockade. Benzodiazepines, however, improve cata­tonia by increasing GABA and decreas­ing NMDA receptor activity. In this case, Mr. D was naïve to antipsychotics and seemed to be sensitive to them, as evi­denced by his worsening symptoms.

Which condition should be considered in the differential diagnosis?
   a) parkinsonian-hyperpyrexia syndrome
   b) neuroleptic malignant syndrome (NMS)
   c) stiff person syndrome
   d) serotonin syndrome
   e) CNS infection

The authors’ observations
NMS, catatonia, and parkinsonian-hyperpyrexia syndrome are all related to diminished action of dopamine at the D2 receptor. Although the mechanism of cata­tonia is not completely understood, NMS is thought to be caused by blockade at the D2 receptors by antipsychotics, whereas parkinsonian-hyperpyrexia syndrome is related to withdrawal of dopamine ago­nists. Because of the similarity in symptoms and proposed mechanisms, some experts hypothesize that NMS is a drug-induced malignant catatonia.^10,11 Interestingly, NMS and catatonia respond to withdrawal of antipsychotics, and addition of benzodiaz­epines and ECT.

Mr. D showed posturing and other behav­ioral abnormalities, which are less common in NMS. Furthermore, although he had epi­sodes of mild tachycardia, autonomic dys­regulation—a hallmark of NMS—was not found. Given the common shared deficiency of activity at the D2 receptor in both NMS and catatonia, antipsychotics could cause or worsen either condition.

TREATMENT ECT
Mr. D’s olanzapine dosage is decreased to 2.5 mg/d. His catatonic symptoms improve with each dosage of oral lorazepam; however, effects seem to lessen and last for shorter peri­ods over the following day. Additionally, Mr. D again becomes more disorganized, stiff, and unable to feed or bathe himself, and develops episodes of mild tachycardia.

Given Mr. D’s partial and poorly sustained response to lorazepam, a trial of ECT is pur­sued. On the third day of hospitalization, he receives ECT with bi-frontal lead placement at 25% energy. Concurrently, olanzapine is dis­continued because of worsening muscle stiff­ness and concern about neuroleptic sensitivity. His BFCRS score after ECT is 2, and he is noted to be more interactive on the inpatient unit. He continues to receive ECT 3 times a week, with notable improvement, but ongoing psy­chotic symptoms and catatonic symptoms partially reemerge between ECT treatments. Lead placement is changed to bi-temporal by the third treatment, and the energy setting is increased from 25% to 50%, and to 75% by the sixth treatment. An additional nighttime dose of oral lorazepam, 2 mg, is added after the sixth treatment, in an attempt to reduce “wearing off” by morning.

After the seventh treatment, Mr. D is able to maintain logical conversation without re-emergence of catatonic symptoms over 2 days, signifying a turning point in the treatment course. The ECT energy setting is decreased to 50% to minimize potential memory deficits. His insight into his illness and treatment dramati­cally improve over the next few days. ECT is dis­continued after the tenth treatment and Mr. D is discharged home to the care of his family.

 

The authors’ observations
Randomized clinical trials studying the effectiveness of ECT for catatonia are lim­ited. Much of what we know about ECT comes from case reports that describe excel­lent outcomes for a variety of treatment-resistant illnesses, including catatonia in mood disorders, schizophrenia, autism, and other organic brain disease.¹²

Although benzodiazepines often are the first-line treatment for catatonia caused by any underlying illness, one study showed only 1 of 41 patients achieved remission with benzodiazepines, compared with 100% of those treated with ECT¹³; another study sup­ported these results with 8 of 9 lorazepam non-responders responding to ECT.¹⁴ There are few case reports of substance-induced catatonia in the absence of other chronic mental illness, although none report use of ECT. However, a study showed no signifi­cant difference in the effectiveness of ECT for catatonia caused by an affective disorder or schizophrenia.¹⁵

Mr. D’s case exemplifies complete remis­sion of catatonia induced by a psychoactive substance.

OUTCOME Steady improvement
Mr. D is followed in the outpatient clinic for 1 month after discharge; lorazepam is tapered successfully. During this time frame, psychotic and catatonic symptoms do not re-emerge. He reports some initial working memory defi­cits that improve steadily. There is no evidence of any significant psychiatric signs or symp­toms, including neurovegetative symptoms of depression, mania or hypomania, perceptual disturbances, or disorganized thoughts or behaviors. He remains abstinent from alcohol, tobacco, and all psychoactive substances.

Bottom Line
Persistent psychosis and catatonia after the use of newer designer drugs such as 2C-B are rare, but these drugs carry serious potential complications that clinicians should be aware of. Benzodiazepines and electroconvulsive therapy have been proved effective for catatonia that is related to a number of psychiatric illnesses, often resulting in good outcomes. However, current evidence on their use is limited, particularly regarding treatment of substance-induced psychosis and catatonia.

Related Resources
• Meyer MR, Maurer HH. Metabolism of designer drugs of abuse: an updated review. Curr Drug Metab. 2010;11(5):468-482.
• Rickli A, Luethi D, Reinisch J, et al. Receptor interaction pro­files of novel N-2-methoxybenzyl (NBOMe) derivatives of 2,5-dimethoxy-substituted phenethylamines (2C drugs). Neuropharmacology. 2015;99:546-553.

Drug Brand Names
Haloperidol • Haldol
Lorazepam • Ativan
Olanzapine • Zyprexa

Disclosures
The authors report no financial relationship with any company whose products are mentioned in this article or with manufacturers of competing products.

CASE Rigid, frightened, and mute
Mr. D, age 23, presents for evaluation immediately after discharge from another hospital, where he had been treated for altered mental status.

Ten days earlier, Mr. D’s friends obtained 2C-B (2,5-dimethoxy-4-bromophenethylamine), from the “Darknet,” an underground niche of the Internet. He ingested 20 mg of 2C-B in pow­der form. Although his friends recovered from a “safe trip,” Mr. D decompensated rapidly over the next few days with persistent psychosis, experiencing both auditory and visual halluci­nations. He is “acting strange“ at work, and try­ing to find “hidden codes” in data. Mr. D also has persistent thought disorganization. He speaks of “connections” between people and things, and says that he is an alien in a spaceship. His friends and family report that he is talking rap­idly and is sleeping only 2 or 3 hours each night. Mr. D abruptly quit his job as an analyst a few days after taking the drug.

Mr. D is a single, Ivy League-educated man and is described as hardworking and analyti­cal. His family denies any recent mood changes or life stressors. They report that 1 month ago, Mr. D began smoking marijuana daily. He has no significant medical or psychiatric history, and no family history of psychiatric disorders.

What is your most likely diagnosis for Mr. D?
   a) delirium due to a general medical condition
   b) substance-induced psychotic disorder
   c) catatonia due to a general medical condition
   d) schizophrenia
   e) bipolar I disorder, currently manic, with psychosis

The authors’ observations
Ring-substituted phenethylamines, com­monly known as 2Cs, are designer drugs that are emerging as new substances of abuse.¹ 2C-B belongs to the phenethyl­amine subclass of monoamine alkaloids that includes more familiar drugs such as amphetamines, methamphetamines, and 3,4-methylenedioxy-methamphetamine (MDMA).² It was first synthesized in 1974 by Alexander Shulgin, later described in his book Phenethylamines I Have Known and Loved: A Chemical Love Story, and its hallucinogenic activity is reported to be similar to LSD, mescaline, and psilocybin.³ The literature is scant on the acute effects of 2C intoxication or long-term sequelae of 2C ingestion.¹ Most available information regarding the pharmacology of 2C-B comes from users who have reported their drug experiences on blogs, Web sites and forums, and in the media.⁴

2C-B usually is taken orally in powder or tablet form, in a dose of 10 to 50 mg.⁴ After an onset period of 20 to 90 minutes, the drug’s effect reaches maximum effect in 15 to 30 minutes, then plateaus for 2 to 7 hours, and comes down within 1 to 2 hours.⁴ 2C-B is known to be orally active, and its halluci­nogenic effects are mediated by its actions as a partial serotonin 5HT-2A and 5HT-2C receptor agonist.⁵ Entactogenic-stimulating effects have been reported at low doses (4 to 10 mg), whereas visual hallucinations with intense col­ors and object distortion have been reported at moderate doses (10 to 20 mg).⁴

2C-B, which users often take at parties or raves, appeared on the drug market in the mid 1980s and early 1990s under the names Nexus, Erox, Performax, Toonies, Bromo, Spectrum, and Venus and marketed as a replacement for MDMA after it became a Schedule I drug in the United States.4,6 Some users consume 2C-B in combination with other illicit drugs, including MDMA (called a “party pack”) or LSD (referred to as a “banana split”).⁶

According to the U.S. Drug Enforcement Agency, law enforcement authorities first seized 2C-B laboratories in California in 1986 and Arizona in 1992.⁶ Distribution of the drug has been sporadic since it became Schedule I in 1995, and it has been seized from several states, including Virginia, Nevada, Maine, Illinois, Missouri, South Dakota, and Kansas.⁶

EXAMINATION Passive and mute
On examination, Mr. D is lying in bed with eyes closed and extremities extended in an odd, rigid posture. He is resistant to attempts at passive movement, is nonresponsive to verbal commands, and is mute. A review of vital signs shows tachycardia, 110 beats per minute, but the physical exam is otherwise unremark­able. His Bush-Francis Catatonia Rating Scale (BFCRS) score is 17, indicating a diagnosis of catatonia. Mini-Mental Status Examination cannot be completed because Mr. D is unable to participate.

Laboratory studies reveal an elevated cre­atinine kinase (CK) level of 356 U/L. Results of a complete blood count, comprehensive met­abolic panel, urinalysis, and thyroid-stimulat­ing hormone are normal. Blood alcohol level is <10 mg/dL. Acetaminophen and salicylate levels are normal (<5 mg/dL). Records from his recent hospitalization reveal normal head CT, chest radiography, EEG, and urinalysis, and a negative urine drug screen.

What is the next step in managing Mr. D’s catatonic symptoms?
   a) IV normal saline
   b) IV lorazepam
   c) emergent electroconvulsive therapy (ECT)
   d) IM haloperidol
   e) IM olanzapine

 

TREATMENT Saline and psychotropics
While in the emergency room, Mr. D receives 2 L of IV saline. His CK level falls to 137 U/L. A challenge with IV lorazepam, 2 mg, also is per­formed. Mr. D becomes talkative and follows commands with fluid movements, but his dis­organized, delusional thoughts persist. BFCRS score has improved to 9 (Table 1). He is admitted to the psychiatric unit and started on oral lorazepam, 2 mg, 3 times daily, for catato­nia, and olanzapine, 10 mg/d, for psychosis.

The differential diagnosis for Mr. D’s psy­chosis includes substance-induced psychotic disorder, schizophrenia, bipolar disorder, and psychosis with another organic cause (Table 2).⁷ Further medical workup is com­pleted, including a urine drug screen, testing for HIV, hepatitis B, syphilis, lead and heavy metals, ceruloplasmin, vitamin B₁₂, folate, antinuclear antibody, sedimentation rate, and brain MRI. Cannabinoids are detected in his urine drug screen. Another urine sample is sent to an outside lab to test for several synthetic drugs, including MDMA, 3,4-methylenedioxy- N-ethyl-amphetamine, 2C-B, 2C-C, 2C-I, and 2C-P, results of which also are negative.

By the second day of hospitalization, Mr. D appears less disorganized but contin­ues to complain of “scrambled thoughts” and appears guarded. Despite initial response to IV lorazepam and its continuation in oral form, over the next day Mr. D appears more psychomotor-slowed, with motor stiffness. His score on the BFCRS increases, with sig­nificant posturing; vital signs remain stable, however.

What is your next step in managing his catatonic symptoms?
   a) increase olanzapine
   b) decrease olanzapine
   c) decrease lorazepam
   d) emergent ECT
   e) switch to haloperidol

The authors’ observations
Although catatonia can be associated with a mood or psychotic disorder, it also can be induced by a medication or gen­eral medical condition (Table 3).⁸ It is thought that catatonia is associated with decreased γ-aminobutyric acid (GABA) and dopamine D2 receptor activity, and increased N-methyl-d-aspartate (NMDA) receptor activity.⁹ Antipsychotics could worsen catatonia through D2 blockade. Benzodiazepines, however, improve cata­tonia by increasing GABA and decreas­ing NMDA receptor activity. In this case, Mr. D was naïve to antipsychotics and seemed to be sensitive to them, as evi­denced by his worsening symptoms.

Which condition should be considered in the differential diagnosis?
   a) parkinsonian-hyperpyrexia syndrome
   b) neuroleptic malignant syndrome (NMS)
   c) stiff person syndrome
   d) serotonin syndrome
   e) CNS infection

The authors’ observations
NMS, catatonia, and parkinsonian-hyperpyrexia syndrome are all related to diminished action of dopamine at the D2 receptor. Although the mechanism of cata­tonia is not completely understood, NMS is thought to be caused by blockade at the D2 receptors by antipsychotics, whereas parkinsonian-hyperpyrexia syndrome is related to withdrawal of dopamine ago­nists. Because of the similarity in symptoms and proposed mechanisms, some experts hypothesize that NMS is a drug-induced malignant catatonia.^10,11 Interestingly, NMS and catatonia respond to withdrawal of antipsychotics, and addition of benzodiaz­epines and ECT.

Mr. D showed posturing and other behav­ioral abnormalities, which are less common in NMS. Furthermore, although he had epi­sodes of mild tachycardia, autonomic dys­regulation—a hallmark of NMS—was not found. Given the common shared deficiency of activity at the D2 receptor in both NMS and catatonia, antipsychotics could cause or worsen either condition.

TREATMENT ECT
Mr. D’s olanzapine dosage is decreased to 2.5 mg/d. His catatonic symptoms improve with each dosage of oral lorazepam; however, effects seem to lessen and last for shorter peri­ods over the following day. Additionally, Mr. D again becomes more disorganized, stiff, and unable to feed or bathe himself, and develops episodes of mild tachycardia.

Given Mr. D’s partial and poorly sustained response to lorazepam, a trial of ECT is pur­sued. On the third day of hospitalization, he receives ECT with bi-frontal lead placement at 25% energy. Concurrently, olanzapine is dis­continued because of worsening muscle stiff­ness and concern about neuroleptic sensitivity. His BFCRS score after ECT is 2, and he is noted to be more interactive on the inpatient unit. He continues to receive ECT 3 times a week, with notable improvement, but ongoing psy­chotic symptoms and catatonic symptoms partially reemerge between ECT treatments. Lead placement is changed to bi-temporal by the third treatment, and the energy setting is increased from 25% to 50%, and to 75% by the sixth treatment. An additional nighttime dose of oral lorazepam, 2 mg, is added after the sixth treatment, in an attempt to reduce “wearing off” by morning.

After the seventh treatment, Mr. D is able to maintain logical conversation without re-emergence of catatonic symptoms over 2 days, signifying a turning point in the treatment course. The ECT energy setting is decreased to 50% to minimize potential memory deficits. His insight into his illness and treatment dramati­cally improve over the next few days. ECT is dis­continued after the tenth treatment and Mr. D is discharged home to the care of his family.

 

The authors’ observations
Randomized clinical trials studying the effectiveness of ECT for catatonia are lim­ited. Much of what we know about ECT comes from case reports that describe excel­lent outcomes for a variety of treatment-resistant illnesses, including catatonia in mood disorders, schizophrenia, autism, and other organic brain disease.¹²

Although benzodiazepines often are the first-line treatment for catatonia caused by any underlying illness, one study showed only 1 of 41 patients achieved remission with benzodiazepines, compared with 100% of those treated with ECT¹³; another study sup­ported these results with 8 of 9 lorazepam non-responders responding to ECT.¹⁴ There are few case reports of substance-induced catatonia in the absence of other chronic mental illness, although none report use of ECT. However, a study showed no signifi­cant difference in the effectiveness of ECT for catatonia caused by an affective disorder or schizophrenia.¹⁵

Mr. D’s case exemplifies complete remis­sion of catatonia induced by a psychoactive substance.

OUTCOME Steady improvement
Mr. D is followed in the outpatient clinic for 1 month after discharge; lorazepam is tapered successfully. During this time frame, psychotic and catatonic symptoms do not re-emerge. He reports some initial working memory defi­cits that improve steadily. There is no evidence of any significant psychiatric signs or symp­toms, including neurovegetative symptoms of depression, mania or hypomania, perceptual disturbances, or disorganized thoughts or behaviors. He remains abstinent from alcohol, tobacco, and all psychoactive substances.

Bottom Line
Persistent psychosis and catatonia after the use of newer designer drugs such as 2C-B are rare, but these drugs carry serious potential complications that clinicians should be aware of. Benzodiazepines and electroconvulsive therapy have been proved effective for catatonia that is related to a number of psychiatric illnesses, often resulting in good outcomes. However, current evidence on their use is limited, particularly regarding treatment of substance-induced psychosis and catatonia.

Related Resources
• Meyer MR, Maurer HH. Metabolism of designer drugs of abuse: an updated review. Curr Drug Metab. 2010;11(5):468-482.
• Rickli A, Luethi D, Reinisch J, et al. Receptor interaction pro­files of novel N-2-methoxybenzyl (NBOMe) derivatives of 2,5-dimethoxy-substituted phenethylamines (2C drugs). Neuropharmacology. 2015;99:546-553.

Drug Brand Names
Haloperidol • Haldol
Lorazepam • Ativan
Olanzapine • Zyprexa

Disclosures
The authors report no financial relationship with any company whose products are mentioned in this article or with manufacturers of competing products.

CASE Rigid, frightened, and mute
Mr. D, age 23, presents for evaluation immediately after discharge from another hospital, where he had been treated for altered mental status.

Ten days earlier, Mr. D’s friends obtained 2C-B (2,5-dimethoxy-4-bromophenethylamine), from the “Darknet,” an underground niche of the Internet. He ingested 20 mg of 2C-B in pow­der form. Although his friends recovered from a “safe trip,” Mr. D decompensated rapidly over the next few days with persistent psychosis, experiencing both auditory and visual halluci­nations. He is “acting strange“ at work, and try­ing to find “hidden codes” in data. Mr. D also has persistent thought disorganization. He speaks of “connections” between people and things, and says that he is an alien in a spaceship. His friends and family report that he is talking rap­idly and is sleeping only 2 or 3 hours each night. Mr. D abruptly quit his job as an analyst a few days after taking the drug.

Mr. D is a single, Ivy League-educated man and is described as hardworking and analyti­cal. His family denies any recent mood changes or life stressors. They report that 1 month ago, Mr. D began smoking marijuana daily. He has no significant medical or psychiatric history, and no family history of psychiatric disorders.

What is your most likely diagnosis for Mr. D?
   a) delirium due to a general medical condition
   b) substance-induced psychotic disorder
   c) catatonia due to a general medical condition
   d) schizophrenia
   e) bipolar I disorder, currently manic, with psychosis

The authors’ observations
Ring-substituted phenethylamines, com­monly known as 2Cs, are designer drugs that are emerging as new substances of abuse.¹ 2C-B belongs to the phenethyl­amine subclass of monoamine alkaloids that includes more familiar drugs such as amphetamines, methamphetamines, and 3,4-methylenedioxy-methamphetamine (MDMA).² It was first synthesized in 1974 by Alexander Shulgin, later described in his book Phenethylamines I Have Known and Loved: A Chemical Love Story, and its hallucinogenic activity is reported to be similar to LSD, mescaline, and psilocybin.³ The literature is scant on the acute effects of 2C intoxication or long-term sequelae of 2C ingestion.¹ Most available information regarding the pharmacology of 2C-B comes from users who have reported their drug experiences on blogs, Web sites and forums, and in the media.⁴

2C-B usually is taken orally in powder or tablet form, in a dose of 10 to 50 mg.⁴ After an onset period of 20 to 90 minutes, the drug’s effect reaches maximum effect in 15 to 30 minutes, then plateaus for 2 to 7 hours, and comes down within 1 to 2 hours.⁴ 2C-B is known to be orally active, and its halluci­nogenic effects are mediated by its actions as a partial serotonin 5HT-2A and 5HT-2C receptor agonist.⁵ Entactogenic-stimulating effects have been reported at low doses (4 to 10 mg), whereas visual hallucinations with intense col­ors and object distortion have been reported at moderate doses (10 to 20 mg).⁴

2C-B, which users often take at parties or raves, appeared on the drug market in the mid 1980s and early 1990s under the names Nexus, Erox, Performax, Toonies, Bromo, Spectrum, and Venus and marketed as a replacement for MDMA after it became a Schedule I drug in the United States.4,6 Some users consume 2C-B in combination with other illicit drugs, including MDMA (called a “party pack”) or LSD (referred to as a “banana split”).⁶

According to the U.S. Drug Enforcement Agency, law enforcement authorities first seized 2C-B laboratories in California in 1986 and Arizona in 1992.⁶ Distribution of the drug has been sporadic since it became Schedule I in 1995, and it has been seized from several states, including Virginia, Nevada, Maine, Illinois, Missouri, South Dakota, and Kansas.⁶

EXAMINATION Passive and mute
On examination, Mr. D is lying in bed with eyes closed and extremities extended in an odd, rigid posture. He is resistant to attempts at passive movement, is nonresponsive to verbal commands, and is mute. A review of vital signs shows tachycardia, 110 beats per minute, but the physical exam is otherwise unremark­able. His Bush-Francis Catatonia Rating Scale (BFCRS) score is 17, indicating a diagnosis of catatonia. Mini-Mental Status Examination cannot be completed because Mr. D is unable to participate.

Laboratory studies reveal an elevated cre­atinine kinase (CK) level of 356 U/L. Results of a complete blood count, comprehensive met­abolic panel, urinalysis, and thyroid-stimulat­ing hormone are normal. Blood alcohol level is <10 mg/dL. Acetaminophen and salicylate levels are normal (<5 mg/dL). Records from his recent hospitalization reveal normal head CT, chest radiography, EEG, and urinalysis, and a negative urine drug screen.

What is the next step in managing Mr. D’s catatonic symptoms?
   a) IV normal saline
   b) IV lorazepam
   c) emergent electroconvulsive therapy (ECT)
   d) IM haloperidol
   e) IM olanzapine

 

TREATMENT Saline and psychotropics
While in the emergency room, Mr. D receives 2 L of IV saline. His CK level falls to 137 U/L. A challenge with IV lorazepam, 2 mg, also is per­formed. Mr. D becomes talkative and follows commands with fluid movements, but his dis­organized, delusional thoughts persist. BFCRS score has improved to 9 (Table 1). He is admitted to the psychiatric unit and started on oral lorazepam, 2 mg, 3 times daily, for catato­nia, and olanzapine, 10 mg/d, for psychosis.

The differential diagnosis for Mr. D’s psy­chosis includes substance-induced psychotic disorder, schizophrenia, bipolar disorder, and psychosis with another organic cause (Table 2).⁷ Further medical workup is com­pleted, including a urine drug screen, testing for HIV, hepatitis B, syphilis, lead and heavy metals, ceruloplasmin, vitamin B₁₂, folate, antinuclear antibody, sedimentation rate, and brain MRI. Cannabinoids are detected in his urine drug screen. Another urine sample is sent to an outside lab to test for several synthetic drugs, including MDMA, 3,4-methylenedioxy- N-ethyl-amphetamine, 2C-B, 2C-C, 2C-I, and 2C-P, results of which also are negative.

By the second day of hospitalization, Mr. D appears less disorganized but contin­ues to complain of “scrambled thoughts” and appears guarded. Despite initial response to IV lorazepam and its continuation in oral form, over the next day Mr. D appears more psychomotor-slowed, with motor stiffness. His score on the BFCRS increases, with sig­nificant posturing; vital signs remain stable, however.

What is your next step in managing his catatonic symptoms?
   a) increase olanzapine
   b) decrease olanzapine
   c) decrease lorazepam
   d) emergent ECT
   e) switch to haloperidol

The authors’ observations
Although catatonia can be associated with a mood or psychotic disorder, it also can be induced by a medication or gen­eral medical condition (Table 3).⁸ It is thought that catatonia is associated with decreased γ-aminobutyric acid (GABA) and dopamine D2 receptor activity, and increased N-methyl-d-aspartate (NMDA) receptor activity.⁹ Antipsychotics could worsen catatonia through D2 blockade. Benzodiazepines, however, improve cata­tonia by increasing GABA and decreas­ing NMDA receptor activity. In this case, Mr. D was naïve to antipsychotics and seemed to be sensitive to them, as evi­denced by his worsening symptoms.

Which condition should be considered in the differential diagnosis?
   a) parkinsonian-hyperpyrexia syndrome
   b) neuroleptic malignant syndrome (NMS)
   c) stiff person syndrome
   d) serotonin syndrome
   e) CNS infection

The authors’ observations
NMS, catatonia, and parkinsonian-hyperpyrexia syndrome are all related to diminished action of dopamine at the D2 receptor. Although the mechanism of cata­tonia is not completely understood, NMS is thought to be caused by blockade at the D2 receptors by antipsychotics, whereas parkinsonian-hyperpyrexia syndrome is related to withdrawal of dopamine ago­nists. Because of the similarity in symptoms and proposed mechanisms, some experts hypothesize that NMS is a drug-induced malignant catatonia.^10,11 Interestingly, NMS and catatonia respond to withdrawal of antipsychotics, and addition of benzodiaz­epines and ECT.

Mr. D showed posturing and other behav­ioral abnormalities, which are less common in NMS. Furthermore, although he had epi­sodes of mild tachycardia, autonomic dys­regulation—a hallmark of NMS—was not found. Given the common shared deficiency of activity at the D2 receptor in both NMS and catatonia, antipsychotics could cause or worsen either condition.

TREATMENT ECT
Mr. D’s olanzapine dosage is decreased to 2.5 mg/d. His catatonic symptoms improve with each dosage of oral lorazepam; however, effects seem to lessen and last for shorter peri­ods over the following day. Additionally, Mr. D again becomes more disorganized, stiff, and unable to feed or bathe himself, and develops episodes of mild tachycardia.

Given Mr. D’s partial and poorly sustained response to lorazepam, a trial of ECT is pur­sued. On the third day of hospitalization, he receives ECT with bi-frontal lead placement at 25% energy. Concurrently, olanzapine is dis­continued because of worsening muscle stiff­ness and concern about neuroleptic sensitivity. His BFCRS score after ECT is 2, and he is noted to be more interactive on the inpatient unit. He continues to receive ECT 3 times a week, with notable improvement, but ongoing psy­chotic symptoms and catatonic symptoms partially reemerge between ECT treatments. Lead placement is changed to bi-temporal by the third treatment, and the energy setting is increased from 25% to 50%, and to 75% by the sixth treatment. An additional nighttime dose of oral lorazepam, 2 mg, is added after the sixth treatment, in an attempt to reduce “wearing off” by morning.

After the seventh treatment, Mr. D is able to maintain logical conversation without re-emergence of catatonic symptoms over 2 days, signifying a turning point in the treatment course. The ECT energy setting is decreased to 50% to minimize potential memory deficits. His insight into his illness and treatment dramati­cally improve over the next few days. ECT is dis­continued after the tenth treatment and Mr. D is discharged home to the care of his family.

 

The authors’ observations
Randomized clinical trials studying the effectiveness of ECT for catatonia are lim­ited. Much of what we know about ECT comes from case reports that describe excel­lent outcomes for a variety of treatment-resistant illnesses, including catatonia in mood disorders, schizophrenia, autism, and other organic brain disease.¹²

Although benzodiazepines often are the first-line treatment for catatonia caused by any underlying illness, one study showed only 1 of 41 patients achieved remission with benzodiazepines, compared with 100% of those treated with ECT¹³; another study sup­ported these results with 8 of 9 lorazepam non-responders responding to ECT.¹⁴ There are few case reports of substance-induced catatonia in the absence of other chronic mental illness, although none report use of ECT. However, a study showed no signifi­cant difference in the effectiveness of ECT for catatonia caused by an affective disorder or schizophrenia.¹⁵

Mr. D’s case exemplifies complete remis­sion of catatonia induced by a psychoactive substance.

OUTCOME Steady improvement
Mr. D is followed in the outpatient clinic for 1 month after discharge; lorazepam is tapered successfully. During this time frame, psychotic and catatonic symptoms do not re-emerge. He reports some initial working memory defi­cits that improve steadily. There is no evidence of any significant psychiatric signs or symp­toms, including neurovegetative symptoms of depression, mania or hypomania, perceptual disturbances, or disorganized thoughts or behaviors. He remains abstinent from alcohol, tobacco, and all psychoactive substances.

Bottom Line
Persistent psychosis and catatonia after the use of newer designer drugs such as 2C-B are rare, but these drugs carry serious potential complications that clinicians should be aware of. Benzodiazepines and electroconvulsive therapy have been proved effective for catatonia that is related to a number of psychiatric illnesses, often resulting in good outcomes. However, current evidence on their use is limited, particularly regarding treatment of substance-induced psychosis and catatonia.

Related Resources
• Meyer MR, Maurer HH. Metabolism of designer drugs of abuse: an updated review. Curr Drug Metab. 2010;11(5):468-482.
• Rickli A, Luethi D, Reinisch J, et al. Receptor interaction pro­files of novel N-2-methoxybenzyl (NBOMe) derivatives of 2,5-dimethoxy-substituted phenethylamines (2C drugs). Neuropharmacology. 2015;99:546-553.

Drug Brand Names
Haloperidol • Haldol
Lorazepam • Ativan
Olanzapine • Zyprexa

Disclosures
The authors report no financial relationship with any company whose products are mentioned in this article or with manufacturers of competing products.