Trauma and stressor related disorders include disorders in which exposure to a traumatic or stressful event is listed explicitly as a diagnostic criterion. Previously, trauma- and stressor-related disorders were considered anxiety disorders. However, they are now considered distinct because many patients do not have anxiety but instead have symptoms of anhedonia or dysphoria, anger, aggression, or dissociation. Types of trauma and stressor related disorders are Reactive attachment disorder, Disinhibited social engagement disorder, Posttraumatic stress disorder (PTSD), Acute stress disorder, and Adjustment disorders.