PTSD can develop after an individual has experienced exposure to actual or threatened death, serious injury, or sexual violence. Symptoms of PTSD include episodes of reliving or re-experiencing the event, avoiding things that remind the individual about the event, feeling on edge, and having negative thoughts.

Nightmares, flashbacks, bursts of anger, difficulty concentrating, exaggerated startle response, and difficulty remembering aspects of the event are just a few possible symptoms that people with PTSD might experience.