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Difficulty: MediumAnxiety, OCD, and Trauma-Related Disorders

A 26-year-old female software engineer is evaluated in the outpatient clinic for an 8-month history of excessive, uncontrollable worry. She reports being constantly anxious about her job performance, personal finances, and the health of her parents. This worry is accompanied by severe muscle tension, easily fatiguing, and difficulty falling asleep. During the psychiatric review of systems, the patient mentions that two years ago she experienced a distinct one-week period where she felt "on top of the world," slept only two hours a night without feeling tired, talked more rapidly than usual, and accumulated significant debt from impulsive online shopping. She currently takes no medications other than an oral contraceptive pill. Vital signs are within normal limits. Physical examination reveals mild trapezius muscle tenderness but is otherwise unremarkable. Which of the following statements regarding the evaluation and management of this patient are correct? (Select all that apply)

  1. Cognitive-behavioral therapy is an appropriate first-line intervention for this patient's current psychiatric presentation.Answer
  2. Initial diagnostic evaluation should include a thyroid-stimulating hormone level and a urine toxicology screen.Answer
  3. C
    Initiation of escitalopram monotherapy is the most appropriate next step for long-term maintenance of her symptoms.
  4. D
    Concurrent administration of phenelzine and venlafaxine should be initiated to rapidly manage her severe somatic symptoms.
  5. E
    The patient's symptom timeline and clinical presentation are most consistent with schizophreniform disorder.

Answer

The appropriate steps include recognizing that cognitive-behavioral therapy is a safe and effective first-line intervention, and that the initial diagnostic evaluation should incorporate a thyroid-stimulating hormone level and a urine toxicology screen to rule out physiological causes.
The patient's current presentation of excessive, difficult-to-control worry lasting over 6 months with associated physical symptoms is diagnostic of Generalized Anxiety Disorder (GAD). Concurrently, her history of a 1-week episode of elevated mood and impulsivity is diagnostic of a past manic episode, giving her a background diagnosis of Bipolar I Disorder. For a new presentation of severe anxiety, standard of care dictates ruling out physiologic causes, such as hyperthyroidism or substance use, utilizing tests like TSH and a urine toxicology screen. Once primary GAD is confirmed, cognitive-behavioral therapy (CBT) is an excellent first-line treatment. CBT is highly efficacious for GAD and is particularly advantageous in this patient as it avoids the pharmacological risks of inducing a manic episode, which is a major concern when using antidepressants in bipolar patients.

Step-by-Step Solution

1
Analyze the patient's current psychiatric symptoms and timeline.
The patient has 8 months of excessive worry, muscle tension, fatigue, and sleep disturbances, which meets the criteria for Generalized Anxiety Disorder (GAD).
Establishing the current primary diagnosis is necessary to guide symptom-targeted management.
2
Evaluate the patient's past psychiatric history from the review of systems.
The patient describes a distinct 1-week period of elevated mood, decreased need for sleep, rapid speech, and impulsivity two years ago, which meets the criteria for a past manic episode, establishing an underlying diagnosis of Bipolar I Disorder.
Past psychiatric history critically alters the safety profile of pharmacological treatments for her current anxiety.
3
Determine the safest and most appropriate diagnostic and therapeutic interventions.
Medical rule-outs (TSH, toxicology) are indicated for new anxiety presentations. Cognitive-behavioral therapy is selected as a first-line therapy because it effectively treats GAD without the risk of precipitating a manic episode, unlike SSRI monotherapy.
Evidence-based guidelines require ruling out medical etiologies first and avoiding antidepressant monotherapy in patients with Bipolar I Disorder to prevent iatrogenic harm.

Key Concept

Management of Generalized Anxiety Disorder in the context of comorbid Bipolar I Disorder requires careful avoidance of antidepressant monotherapy to prevent manic switching, making non-pharmacologic options like CBT highly favorable, alongside standard medical rule-outs.
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Topics

Anxiety, OCD, and Trauma-Related Disorders

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