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Anxiety Disorder: Post-Traumatic Stress Disorder Essay Preview: Anxiety Disorder: Post-Traumatic Stress Disorder Report this essay Anxiety Disorder: Post-Traumatic Stress Disorder Post-traumatic stress disorder (PTSD) has been around for many years but it wasnt added to the Diagnostic and Statistical Manual of Mental Disorders (DSM-III) until 1980. (Bayse, 1998) It has become a lot more common.