Post Traumatic Stress Disorder
Post-Traumatic Stress Disorder (PTSD) is an anxiety disorder that can develop after exposure to a terrifying event or ordeal in which grave physical harm occurred or was threatened.
Traumatic events that may trigger PTSD include violent personal assaults, natural or human-caused disasters, accidents, or military combat. For a more detailed description see the Mayo Clinic site.
Signs & Symptoms
People with PTSD have persistent frightening thoughts and memories of their ordeal (often called flashbacks) and feel emotionally numb, especially with people they were once close to. They may experience sleep problems, feel detached or numb, or be easily startled. A list of symptoms can be seen on the Web MD site.