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Difficulty: MediumDepressive Disorders

A 28-year-old man presents to a primary care clinic with a 2-month history of worsening mood, severe fatigue, and lack of motivation. He reports sleeping up to 12 hours a day but still feeling exhausted upon waking. Additionally, he has experienced a significant increase in appetite, resulting in a 6 kg (13.2 lb) weight gain over the past month. He describes a pervasive sensation of extreme heaviness in his arms and legs, making it difficult to get out of bed. His past medical history is notable for a severe depressive episode at age 20. At that time, he was prescribed a medication that he discontinued after 3 weeks because it made him feel "too wired and agitated." He is currently not taking any medications. Vital signs and physical examination are unremarkable. The physician is considering starting an antidepressant. Which of the following is the most appropriate next step in the management of this patient?

  1. Inquire about periods of excessive energy, racing thoughts, and decreased need for sleepAnswer
  2. B
    Initiate sertraline therapy and advise him not to discontinue the medication prematurely
  3. C
    Prescribe a combination of a selective serotonin reuptake inhibitor and a monoamine oxidase inhibitor
  4. D
    Obtain a baseline electrocardiogram to prepare for tricyclic antidepressant therapy
  5. E
    Diagnose a brief psychotic disorder based on his sensation of limb heaviness

Answer

The most appropriate next step is to inquire about periods of excessive energy, racing thoughts, and decreased need for sleep to rule out bipolar disorder.
The correct approach is to inquire about periods of excessive energy, racing thoughts, and decreased need for sleep. This patient presents with a major depressive episode characterized by atypical features (hypersomnia, hyperphagia, weight gain, and leaden paralysis). A crucial red flag in his history is the 'wired and agitated' reaction to a previously prescribed medication (likely an antidepressant). This adverse reaction, combined with early-onset depression and atypical features, is highly suggestive of bipolar disorder. Standard medical guidelines require that all patients presenting with a depressive episode be screened for a history of mania or hypomania before initiating antidepressant therapy to prevent an iatrogenic manic switch.

Step-by-Step Solution

1
Identify the primary symptom cluster.
The patient presents with hypersomnia, hyperphagia, weight gain, and leaden paralysis (heavy limbs) alongside low mood.
These symptoms define major depressive disorder with atypical features.
2
Analyze historical red flags.
The patient had a previous severe depressive episode at age 20 and experienced a 'wired and agitated' reaction to a prescribed medication.
Early onset of depression, atypical features, and activation/agitation on antidepressants are strong indicators of an underlying bipolar spectrum disorder.
3
Determine the necessary clinical action before treatment.
The physician must screen for a lifetime history of manic or hypomanic episodes.
Prescribing antidepressant monotherapy to a patient with bipolar disorder can precipitate a manic switch. It is critical to confirm whether the depressive disorder is unipolar or bipolar before initiating pharmacotherapy.

Key Concept

All patients presenting with a depressive episode must be screened for a lifetime history of mania or hypomania to rule out bipolar disorder prior to initiating antidepressant monotherapy. This is especially critical in patients with atypical features or a history of antidepressant-induced activation.
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Topics

Depressive Disorders

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