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
All are seen in general anxiety disorder (GAD), EXCEPT: 
Select and explain. 
A. Muscle tension, B. Irritability, C. Fear of impending doom, D. Restlessness
C: Fear of impending doom
Answer: C: Fear of impending doom 
Explanation: Restlessness, easy fatigue, difficulty concentrating, irritability, muscle tension and sleep disturbance are features of generalised anxiety disorder. Fear of impending doom is a symptom of panic attack or panic disorder.