It is an injury... from being put in a position that some people just can not tolerate. Consider how outrageous it would be to give the victim of a rape, "Post Coitus Detachment Disorder". I don't agree with many things about President Bush, but this one, I feel he is right. Post Traumatic Stress or all the names it has had over the years... is an debilitating injury.
When I was in the Army, early 70’s, many of my fellow soldiers in my unit had just come back from ‘nam. Their stories, some had pictures of the atrocities will never be forgotten. Go out on patrol one day, get in a fire fight, have someone go MIA and then on the following day go back out on patrol in the same area and find him gutted and decapitated, well, some of these guys will never be the same high school kid they were before they went there.