What is PTSD?? Posttraumatic stress disorder (PTSD) is an emotional illness that develops as a result of a terribly frightening, life-threatening, or otherwise highly unsafe experience. PTSD sufferers re-experience the traumatic event or events in some way, tend to avoid places, people, or other things that remind them of the event (avoidance), and are exquisitely … Continue reading More information on PTSD.