Hi and welcome to the forum.
Your hubby will need to go through this:
http://www.ptsdforum.org/forms/ptsd-diagnosis/
this will help determine if he has ptsd or not. Only a psych and diagnosis, officially, but I would see if you hubby would go through this with you.
There is also a assessment tool in the forms section (button on the top of the screen) which he should use.
bec