I have made the case here, in the past, that PTSD is not so much a disease or "disorder," but a normal variant in response to disturbing events. The mental health field, these days, is pathologizing everything and everybody.
I have seen persistent PTSD complaints in all sorts of people, far more civilians than military. Life affects us deeply, and can shatter us, unless we are heavily armored or lacking in emotional response. I have seen them in sudden announcements to divorce, spousal death, deaths of a child, job loss, fatal car crashes, young police officers, and witnesses to the 9-11 jumpers.
We Westerners live in a mostly safe world, insulated from so much of the pain, distress, and horror which were routine in past generations. An ordinary snowfall, or a loss of electric power, is now a really big deal, a tragedy. We are so safe and comfortable that we have lost the tools to cope with tough situations, scenes of horror, and painful memories. These things do, indeed, change us. Comfort and safety have made us innocent, in a way. Police and doctors deal with these things routinely, and develop thick skins, professional distance.
I read this today: Government Can Do More to Treat Veterans with PTSD. The number of returning veterans afflicted with Post Traumatic Stress Disorder has reached crisis proportions.
By government, they mean the VA. "Qualifying" for disability is a terrible idea. Getting into life is the best plan, whether one wants to or not. No matter what happens, it's best to buck up and get on with it.
There is no treatment, no cure, for being human. There is no cure for PTSD complaints other than the old-fashioned "tincture of time." Entrepreneurs out there sell cures which are snake oil. All we Psychiatrists really have to offer these people is care, emotional support, help with substance abuse, and, if they wish, emotion-blunting medicines. There is no magic cure for life's horrors and misfortunes other than alcohol and drugs, and they tend to make things worse in the end.