PTSD is Post Traumatic Stress Disorder. The Veteran's Administration provides much information and provides links and other contact information for support and resources to assist with PTSD. On that site, PTSD is defined as follows:
Posttraumatic stress disorder (PTSD) can occur after someone goes through a traumatic event like combat, assault, or disaster. Most people have some stress reactions after a trauma. If the reactions don't go away over time or disrupt your life, you may have PTSD.