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Difficulty: HardAnxiety, OCD, and Trauma-Related Disorders

A 24-year-old man is brought to the clinic by his sister due to significant behavioral changes. For the past week, he has been sleeping only 2 hours per night but reports feeling highly energetic. He speaks rapidly, frequently jumping from one topic to another, and recently maxed out his credit cards investing in a speculative cryptocurrency. Three weeks ago, the patient was diagnosed with generalized anxiety disorder and panic disorder, for which a daily oral medication was initiated. He has a past medical history of a severe depressive episode at age 19 that lasted for four months. His vital signs are within normal limits. Mental status examination reveals psychomotor agitation, pressured speech, and grandiose delusions. Which of the following is the most appropriate next step in management?

  1. A
    Evaluate for schizophreniform disorder and initiate haloperidol
  2. B
    Increase the dosage of the recently initiated medication
  3. Discontinue the recently initiated medication and start quetiapineAnswer
  4. D
    Continue the recently initiated medication and add lorazepam
  5. E
    Switch the recently initiated medication to venlafaxine

Answer

Discontinue the recently initiated medication and start quetiapine
The patient is presenting with a full manic episode (decreased sleep, pressured speech, impulsivity, grandiose delusions) that emerged three weeks after initiating pharmacological treatment for generalized anxiety disorder and panic disorder. First-line pharmacotherapy for these anxiety disorders includes selective serotonin reuptake inhibitors (SSRIs) or serotonin-norepinephrine reuptake inhibitors (SNRIs). In a patient with an underlying bipolar diathesis—suggested here by a history of severe early-onset major depression—antidepressant monotherapy can precipitate a manic switch. The most appropriate immediate management is to discontinue the offending antidepressant. Additionally, because the patient exhibits severe manic symptoms with psychotic features (grandiose delusions), initiating an antimanic medication, such as an atypical antipsychotic (e.g., quetiapine, olanzapine) or a mood stabilizer, is required to rapidly stabilize his condition.

Step-by-Step Solution

1
Identify the patient's current clinical syndrome based on presenting signs and symptoms.
The patient exhibits a decreased need for sleep, pressured speech, grandiosity, and impulsive behavior, which satisfy the DSM-5 criteria for a manic episode.
Accurate syndrome identification is required before establishing etiology.
2
Determine the etiology of the manic episode by correlating the symptom timeline with recent interventions.
The manic episode began shortly after starting a daily medication for generalized anxiety and panic disorders (most likely an SSRI or SNRI). Given his history of early-onset depression, this points to an antidepressant-induced manic switch.
Understanding that the mania is iatrogenic dictates a different management pathway than spontaneous mania.
3
Select the appropriate pharmacological intervention for medication-induced mania with severe features.
The offending antidepressant must be immediately discontinued. Because the patient has severe symptoms (grandiose delusions, severe agitation), initiation of an antimanic agent such as a second-generation antipsychotic (e.g., quetiapine) is indicated.
Stopping the trigger is the definitive treatment, while an antipsychotic rapidly controls severe psychotic and manic symptoms.

Key Concept

Management of antidepressant-induced mania in patients treated for anxiety disorders
Estimated Time:1m 30s
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Topics

Anxiety, OCD, and Trauma-Related Disorders

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