Signs Of Post Traumatic Stress Disorder Quiz . PTSD, or post-traumatic stress disorder, can happen to anyone who experiences or witnesses a terrifying event. Symptoms may include flashbacks, nightmares and severe anxiety, as well as uncontrollable thoughts about the event. (PDF) The Effect of Failure on Cognitive and Psychological ... (John Simon) PTSD can happen after we've been through one traumatic event, or after. It's not just a "veteran's ailment," and PTSD is gaining needed recognition in the psychotherapeutic healing community. Post-traumatic stress disorder (PTSD) is a disorder that develops in some people who have experienced a shocking, scary, or dangerous event. Often, people with PTSD have persistent frightening thoughts and memories of their ordeal and feel emotionally numb, especially with people they were once close to. PTSD can leave you feeling stuck with a constant sense of danger and painful memories. ...