No disrespect intended for legitimate sufferers, but I have a degree of skepticism over PTSD. Apparently many can get it, from many types of "Trauma."
I have learned from friends and relatives, that the military is quick to determine a such diagnosis, and treat it with drugs, and even disability discharges.
I know two women, to got discharges, PTSD diagnosis, not from combat, but from rape. Now I don't classify that is not legitimate. But I note it for the range of things now falling under this category.
The WWI term was "Shell Shock" for battle related trauma. These days you might get discharged with disability pay, if your DI yells too loud and upsets you.
https://en.wikipedia.org/wiki/Shell_shock