RE: A Quick Explanations on the Psychological Disorders Patients Experience

I have a friend who was in the Nigeria Army and he suffers from PTSD as a result of his involvement in the Boko haram fight in Borno, in 2017 when it was a serous case. Prior to joining the army, he wasn't someone who would kill an ant, I was surprised to see him in Uniforms and on the field fighting insurgence. He always jerks, all of a sudden and immediately carries his riffle, or he picks up anything around him as a self defence.