What is the technical definition of post traumatic stress disorder and how it should be handled?

PTSD is a condition. That may develop after experiencing a horrific or life threatening experience (s). It has symptoms of hypervigilance, marked arousal (fight vs flight rxns), reliving through intrussive memories, nightmares & possibly flashbacks with avoidance of thoughts, memories or triggers for feelings about traumatic events. Treatment is best with a therapist who is experienced with ptsd.