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OCD — USMLE Step 3 MCQ

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ModeratePsychiatry (outpatient management)OCDUSMLE Step 3

A 34-year-old woman spends 3 hours daily washing her hands because of intrusive fears of contamination. She recognizes the thoughts as excessive but feels intense anxiety if she resists. Skin is cracked from washing. She has no psychosis. Which of the following is the most likely diagnosis?

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Reveal the answer and explanation

Correct answer: AObsessive-compulsive disorder

Obsessions are intrusive unwanted thoughts; compulsions are repetitive behaviors performed to reduce anxiety and are time-consuming or impairing.

Reference: APA OCD Treatment Guideline