According to Johns Hopkins Medicine's Health Alerts, post-traumatic stress disorder (PTSD) is, "A form of chronic psychological stress that follows exposure to a traumatic event such as an earthquake, a violent crime (rape, child abuse, murder), torture, an accident, or warfare." Therefore, a brain injury, as well as any other life-threatening injury, can cause post-traumatic stress disorder.
Do you have post-traumatic stress disorder (PTSD)? If you are not sure, a psychologist can diagnosis you. This link informs what the criteria are for PTSD. http://www.ptsdsupport.net/PTSD_DSM-IV-TR_Diagnosis_&_Criteria.html
What have you, or someone you know, found helpful in overcoming post-traumatic stress disorder?
For me, I've found using the 'worst case scenario' method quite helpful, to put things into perspective. A therapist I went to for help with PTSD suggested, aside from using the 'worst case scenario', to use generalizing (recognizing that it is a normal part of life for everyone to feel anxious about things, such as misunderstandings, rejection, stage fright, etc), positive self-statements (chapter the therapist utilized http://books.google.com/books?id=Cobbd_XjZrYC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
) and to use relaxation methods outlined on a previous post in this community ( http://community.livejournal.com/front_tmprl_tbi/860.html