Which psychiatric disorder is most frequently comorbid with obsessive-compulsive disorder?

• A Major depressive disorder ✓
• B Bipolar I disorder
• C Schizophrenia
• D Delusional disorder

Explanation

Major depressive disorder is the most common comorbidity in OCD, occurring in roughly 40 percent of patients over their lifetime, and is frequently secondary to the occupational and social disability produced by the obsessions and compulsions. Schizophrenia comorbidity is far lower, and thought content in schizophrenia is typically ego-syntonic without resistance, unlike obsessions. Bipolar I and delusional disorder are not recognized as frequent companions of OCD.

Reference: Kaplan and Sadock's Synopsis of Psychiatry, 11th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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