panic disorde
"I have suffered from a very severe anxiety and panic disorder all of my life.  I was given Xanax about a year ago because the medications I was taking were not working.  I started taking the Xanax which did take care of the panic attacks for the most part.  But what I did not realize is that though I was taking the dosage that the doctor had prescribed to me I was blacking out and getting very violent or I would be asleep my eyes would open I would punch my boyfriend in the face and try to choke him then go back to sleep like nothing even happened.  The morning after these events he would wake up on the couch and tell me what I had done.  I did not remember doing any of this.  It was terrifying."