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: Unknown
[{'content': 'Which of the following is not a clinical feature of post-traumatic stress disorder? \nSelect and explain. \nA. Flashbacks, B. Nightmare, C. Hallucinations, D. Emotional distress', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref. Oxford textbook of Psychiatry. Page. 49 \n\xa0\nHallucination is not a part of PTSD\nPTSD – DSM 5 criteria\nCriterion A (one required):\xa0The person was exposed to: death, threatened death, actual or threatened serious injury, or actual or threatened sexual violence, in the following way(s):\n\nDirect exposure\nWitnessing the trauma\nLearning that a relative or close friend was exposed to a trauma\nIndirect exposure to aversive details of the trauma, usually in the course of professional duties (e.g., first responders, medics)\n\nCriterion B (one required):\xa0The traumatic event is persistently re-experienced, in the following way(s):\n\nIntrusive thoughts\nNightmares\nFlashbacks\nEmotional distress after exposure to traumatic reminders\nPhysical reactivity after exposure to traumatic reminders\n\nCriterion C (one required):\xa0Avoidance of trauma-related stimuli after the trauma, in the following way(s):\n\nTrauma-related thoughts or feelings\nTrauma-related reminders\n\nCriterion D (two required):\xa0Negative thoughts or feelings that began or worsened after the trauma, in the following way(s):\n\nInability to recall key features of the trauma\nOverly negative thoughts and assumptions about oneself or the world\nExaggerated blame of self or others for causing the trauma\nNegative affect\nDecreased interest in activities\nFeeling isolated\nDifficulty experiencing positive affect\n\nCriterion E (two required):\xa0Trauma-related arousal and reactivity that began or worsened after the trauma, in the following way(s):\n\nIrritability or aggression\nRisky or destructive behavior\nHypervigilance\nHeightened startle reaction\nDifficulty concentrating\nDifficulty sleeping\n\nCriterion F (required):\xa0Symptoms last for more than 1 month.\nCriterion G (required):\xa0Symptoms create distress or functional impairment (e.g., social, occupational).\n\xa0 \xa0 \xa0 \xa0Criterion H (required):\xa0Symptoms are not due to medication, substance use, or other illness.', 'role': 'assistant'}]