This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Personality Disorders, Subject name: Psychiatry
Which is the treatment of choice for OCD? 
Select and explain. 
A. Exposure and response prevention, B. Psychoanalysis, C. Flooding, D. Modeling
A: Exposure and response prevention
Answer: A: Exposure and response prevention 
Explanation: Ans. A. Exposure and response preventionPsychotherapies used in OCDCBT relies primarily on behavior technique of exposure & response prevention (ERP)which has the best evidence. Exposure (to stimulus which induce obsessional thoughts) & response prevention (asking patient not to indulge in compulsive behavior)Other therapies: desensitization,thought stopping- give stimulus to stop thought like may bang table, later can do mentally flooding & aversive conditioningPsychodynamic psychotherapy, family therapy may also be used