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
Which of the following is NOT a clinical feature of Post-Traumatic Stress Disorder (PTSD)? 
Select and explain. 
A. Flashbacks, B. Hallucinations, C. Hyperarousal, D. Emotional numbing
B: Hallucinations
Answer: B: Hallucinations 
Explanation: Hallucinations are not a feature of post traumatic stress disorder. It is a delayed and protracted response to exceptionally stressful or catastrophic life event. It is characterized by flash back (recollection of event), hyper arousal (insomnia), emotional numbing and avoidance. Ref: The Encyclopedia of Psychological Trauma By Gilbe Reyes, Page 42; Counselling for Post-Traumatic Stress Disorder By Michael J. Scott, 3rd Edition, Page 8