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Question

Difficulty: MediumDepressive Disorders

A 26-year-old male graduate student presents to the university health center complaining of severe sadness, lack of motivation, and poor concentration over the past 5 weeks. He states he has completely lost interest in his coursework and hobbies, which is highly unusual for him. He struggles to get out of bed, sleeping up to 14 hours a day, and reports a 5 kg (11 lb) weight gain during this time. Medical history is unremarkable, and he takes no medications. Physical examination reveals psychomotor retardation and a blunted affect, but vital signs and the remainder of the examination are within normal limits. He denies any suicidal ideation. The patient requests an antidepressant medication to help him "get back on track." Which of the following is the most appropriate next step in the clinical evaluation or management of this patient?

  1. Elicit a history of lifetime manic or hypomanic episodes.Answer
  2. B
    Initiate therapy with citalopram and schedule a clinical follow-up in 4 weeks.
  3. C
    Assess for a history of psychotic symptoms occurring in the absence of major mood episodes for at least two weeks.
  4. D
    Order a serum free thyroxine (T4) level to confirm a diagnosis of secondary hypothyroidism.
  5. E
    Prescribe a combination of fluoxetine and phenelzine to aggressively manage his atypical depressive symptoms.

Answer

The most appropriate next step is to screen the patient for a lifetime history of manic or hypomanic episodes.
This patient presents with a major depressive episode featuring atypical symptoms (hypersomnia, weight gain). Atypical features are particularly common in bipolar depression. The most critical next step before starting any antidepressant is to screen for a lifetime history of manic or hypomanic episodes. Treating unrecognized bipolar depression with antidepressant monotherapy carries a significant risk of precipitating a manic switch. If the patient has a history of mania/hypomania, mood stabilizers or atypical antipsychotics would be indicated instead of standard antidepressant monotherapy.

Step-by-Step Solution

1
Identify the primary clinical presentation.
The patient is experiencing a major depressive episode characterized by atypical features, specifically hypersomnia and weight gain.
Recognizing the symptom cluster helps guide the differential diagnosis, as atypical features are frequently seen in the depressive phase of bipolar disorder.
2
Determine the necessary safety and diagnostic evaluations prior to initiating pharmacotherapy.
The physician must screen for a history of mania or hypomania.
Antidepressant monotherapy can precipitate a manic or hypomanic episode (manic switch) in patients with underlying bipolar disorder. All patients presenting with major depression must be screened for bipolarity before prescribing unopposed antidepressants.

Key Concept

Prior to starting antidepressant monotherapy for a major depressive episode, clinicians must screen for a history of manic or hypomanic episodes to prevent precipitating a manic switch in patients with undiagnosed bipolar disorder.
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Topics

Depressive Disorders

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