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': 'Post - traumatic stress disorder is characterized by all except : \nSelect and explain. \nA. Flash back and night mare, B. Severe traumatic injury, C. Re - experiencing stressful events, D. It doesn’t develop after 6 months of stress', 'role': 'user'}, {'content': "Answer: D \nExplanation: Symptoms of PTSD develop within 6 months of the stressor, however, 10% patients have delayed onset.\nPost-traumatic stress disorder :\n\nAccording to ICD - 10, this disorder arises as a delayed and / or protracted response to an exceptionally stressful or catastrophic life event or situation, which is likely to cause pervasive distress in 'almost any person' (e.g. disasters, war, rape or torture, serious accident).\nThe symptoms of PTSD may develop, are a period of latency, within six months are the stressor may be delayed beyond this period.\nThe classical triad of PTSD includes :\n\n\nHyper - arousal Anxiety, irritability, insomnia, poor concentration, Hypervigilance.\nIntrusions Reexperience of traumatic even through intrusions in distressing thought, dream (Nightmares), Flashback.\nAvoidance of stimuli (thoughts, activities, places or people) that arouse recollection of trauma.\xa0\n\nTreatment :\n\nTreatment of PTSD involves both behavior therapy and pharmacotherapy :\n\n\nBehavioral therapy Cognitive behavior therapy (CBT) is the trend of choice. Other forms of psychotherapy for PTSD are exposure therapy, eye movement desensitization and reprocessing (EMDR), and stress management.\nPharmacotherapy Drugs used for PTSD are Antidepressants (SSRIs, TCAs MAOIs), Anxiety drugs (BDZs, Buspirone), Carbamazepine, Valproate, Propranolol, clonidine.", 'role': 'assistant'}]