The under recognition of the psychological effects of trauma in medicine requires a modification of clinical evaluation strategies, given the gravity of the consequences of such conditions if left untreated. The most significant problems are Acute Stress Disorder (ASD) and Post Traumatic Stress Disorder (PTSD), along with comorbid disorders. The most significant comorbidities are abusive alcohol consumption, depressive episodes, symptoms of generalized anxiety, phobia symptoms, of panic disorders, as well as somatic complaints. We distinguish between the measures requiring the intervention of an evaluator and self-report measures. To follow a patient and adapt a treatment it is necessary to know the severity of the peritraumatic reaction. Two major characteristics of the trauma response have been clearly identified; dissociation (measured with the Peri-traumatic Dissociative Experience Scale and distress (measured with the Peri-traumatic Distress Inventory). Some Instruments have been validated that measure the psychopathological consequences related to a traumatic event. The recognized gold standard (Clinician Administered PTSD Scale, or CAPS) is time-consuming and requires an experienced professional to administrate. The most frequently used self-report measures are the Impact of Event Scale-Revised and the Posttraumatic Check List. To measure non-specific psychological consequences of a traumatic event we propose the General Health Questionnaire-28 and The Beck Depression Inventory. Other potentially useful measures are described to aid with the evaluation of traumatized patients.