A 35-year-old man with a 10-year history of OCD (intrusive violent thoughts, checking compulsions) is started on sertraline. After 8 weeks at 200 mg daily, he reports minimal symptom reduction. Which investigation should be performed next to guide further management?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.