 The distinction between different anxiety disorders is based on their time of appearance and how long they will last. The shortest disorder is the acute stress reaction ASR which appears immediately after the traumatic event and will disappear after 48 - 72 hours. ASR symptoms include dissociation, anxiety and affective instubility3. The medium range anxiety disorder is the acute stress disorder ASD, which appears in the first two weeks following the event and will last up to a month. Its symptoms include dissociation, re-experiencing of the traumatic event and avoidant behavior of places and actions that might resemble the traumatic event. The long lasting disorder is the post traumatic stress disorder PTSD, which lasts more than a month and includes symptoms of re-experiencing, avoidant behavior and hyper arousal1. 