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Difficulty: MediumBipolar and Related Disorders

A 41-year-old male accountant is brought to the clinic by his partner due to a 5-week history of feeling 'completely drained.' The patient reports waking up at 3:00 AM daily, having a poor appetite with a 4.5-kg (10-lb) weight loss, and experiencing pervasive feelings of worthlessness. His medical history is notable for a psychiatric admission 7 years ago. During that time, he experienced an 8-day period of sleeping only 2 hours per night, talking rapidly, and spending his life savings on a high-risk investment because he believed he had a telepathic connection with a famous billionaire. He was hospitalized involuntarily for 10 days and discharged on a medication regimen that he discontinued a year later. His only current medication is sumatriptan, which he takes occasionally for migraines. Vital signs and physical examination are within normal limits. Mental status examination reveals psychomotor retardation and a blunted affect. Which of the following is the most appropriate next step in management?

  1. Begin treatment with lurasidoneAnswer
  2. B
    Start fluoxetine
  3. C
    Start venlafaxine
  4. D
    Diagnose schizophreniform disorder and start risperidone
  5. E
    Start phenelzine

Answer

Begin treatment with lurasidone
This patient is currently experiencing a major depressive episode. However, his history of an 8-day episode characterized by a decreased need for sleep, rapid speech, grandiosity, and high-risk behavior requiring hospitalization clearly indicates a past manic episode. Therefore, the correct diagnosis is Bipolar I disorder, currently in a depressed episode. The standard of care for acute bipolar depression includes initiating a medication proven effective for this specific phase, such as an evidence-based second-generation antipsychotic (e.g., lurasidone, quetiapine) or a traditional mood stabilizer (e.g., lithium). Lurasidone effectively treats bipolar depression without the risk of precipitating a manic switch.

Step-by-Step Solution

1
Evaluate the current clinical presentation.
The patient has a 5-week history of depressed mood, early morning awakening, significant weight loss, and feelings of worthlessness.
These symptoms meet the diagnostic criteria for a major depressive episode.
2
Analyze the past psychiatric history.
The patient had a distinct 8-day episode of decreased need for sleep, rapid speech, grandiosity with psychotic features (telepathic connection), and excessive risky behavior requiring hospitalization.
This presentation meets the criteria for a severe manic episode, confirming a lifelong diagnosis of Bipolar I disorder.
3
Determine the safest and most effective pharmacotherapy for the current episode.
Select a medication approved for acute bipolar depression, such as lurasidone, quetiapine, or lithium.
Lurasidone effectively treats the depressive episode without the risk of precipitating a manic switch, which is a major concern with standard antidepressant monotherapy.

Key Concept

Patients presenting with a major depressive episode must be carefully screened for a history of mania; bipolar depression should be treated with mood stabilizers or appropriate second-generation antipsychotics, avoiding antidepressant monotherapy to prevent a manic switch.
Estimated Time:1m 0s
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Topics

Bipolar and Related Disorders

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