How does Exposure and Response Prevention (ERP) work in treating OCD?

• A. Medication-only approach.
• B. Gradual exposure to feared stimuli while preventing compulsive rituals to reduce anxiety and compulsive behavior over time.
• C. Rapid flooding with stimuli and encouragement of rituals.
• D. Psychodynamic interpretation of impulses.

Answer: (B)

Exposure and Response Prevention works by teaching the brain that feared thoughts alone don’t have to trigger a ritual, and that anxiety will lessen even without performing compulsions. It uses gradual exposure to triggers—moving through a carefully arranged hierarchy from mildly to severely distressing cues—while the person is prevented from engaging in the usual rituals. With repeated exposure and prevented rituals, the anxiety response habituates and the link between obsession and compulsion weakens, leading to fewer symptoms over time. This approach is a well-established first-line behavioral treatment for OCD. It differs from medication-only strategies that don’t directly retrain the behavior-anxiety cycle, from rapid flooding which can be overly distressing, and from psychodynamic interpretations of impulses, which aren’t the basis of ERP.