This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Psychiatry
[{'content': 'Derealisation and depersonalization are seen in which type of disorder \nSelect and explain. \nA. Dissociative disorder, B. Personality disorder, C. Mania, D. Somatoform disorder', 'role': 'user'}, {'content': "Answer: A \nExplanation: Derealization: Sensation of changed reality or that one's surroundings have altered. Usually seen in schizophrenia, panic attacks, and dissociative disorders Depersonalization: Sensation of unreality concerning oneself, pas of oneself, or one's environment that occurs under extreme stress or fatigue. Seen in schizophrenia, depersonalization disorder, and schizotypal personality disorder Reference: P.923 7.3 Signs and Symptoms in Psychiatry", 'role': 'assistant'}]