Post Traumatic Stress Disorder American Psychological Association: PTSD American Psychological Association Post Traumatic Stress Disorder (PTSD). PTSD American Psychological Association PTSD PTSD http://www.apa.org/topics/ptsd/ American Psychiatric Association American Psychological Association Sindrome Post Traumatica da Stress American Psychological Association American Psychological Association PTSD Post Traumatic Stress Disorder Posttraumatic Stress Disorder