This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Which of the following is NOT a clinical feature of post - traumatic stress disorder (PTSD)? \nSelect and explain. \nA. Flashbacks, B. Hyperarousal, C. Hallucinations, D. Emotional numbing', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clinical features of PTS :\n\nHyperarousal :\xa0Anxiety, irritability, insomnia, poor concentration, hypervigilance.\nIntrusions :\xa0Re-experience of a traumatic event in distressing thought, or dream (nightmares), flashbacks.\nAvoidance :\xa0Avoidance of stimulus (thoughts, activities) that arouse recollection of trauma.\nOther :\xa0Emotional numbing, emotional detachment, the absence of emotional responsiveness (anhedonia), derealization, depersonalization, depression & hopelessness, guilt or shame or self - blame, dissociative amnesa.', 'role': 'assistant'}]