What is the most likely diagnosis?

A 26-year-old political refugee has sought asylum in the UK and complains of poor concentration. He keeps his family whom he saw killed in a political coup. He is unable to sleep and feels hopeless about his survival. But he is afraid to go out.

What is the most likely diagnosis?
A . PTSD
B . Acute stress disorder
C . OCD
D . Social phobia
E . GAD

Answer: A

Explanation:

PTSD. Keep getting thoughts of his family disaster, insomnia, to avoid similar circumstances he is out these are suggestive of PTSD.