This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'A person washes hands repeatedly with a fear of getting HIV, he is suffering from \nSelect and explain. \nA. Phobic disorder, B. Obsessive-compulsive disorder, C. Dissriative and conversion disorder, D. Somatoform disorder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Obsessive-compulsive disorder # OBSESSIVE-COMPULSIVE DISORDER:> Washers:* This is commonest type. Here the obsession is of contamination with dirt, germs, body excretions and the like.* The compulsion is washing of hands or the whole body, repeatedly many times a day.* It usually spreads on to washing of clothes, washing of bathroom, bedroom, door knobs and personal articles gradually.', 'role': 'assistant'}]