To me, this is too serious a subject for people to be shooting the breeze over on HubPages. The NIH (National Institutes Of Health) offers solid information.
Having said that, however, I can't help but wonder if sometimes some people's PTSD may be made worse when they have to live or work around people who have never experienced it, at least to some degree, themselves and who then just assume (out of ignorance) that the person "will never be the same again". (Not everyone with some degree of PTSD for some amount of time "leaves reality" and imagines himself back in "whatever situation", the way it's so often portrayed on, say, television.)
The answer to this question is that people, situations, causes, degrees-of PTSD, are all individual. I can't help but wonder if (at least in some cases) the reason some people don't APPEAR to be "their old self" is that SOME of the people around them can't imagine that they are, then treat them as if they are not (and never will be), and either drive them to inward anger or else drive them completely away. The "I-know-you-mean-well" thing can be OK when someone isn't trying to work his way through, or just move beyond, trauma; but if someone who doesn't have a clue assumes things are worse and/or keeps throwing the whole "trauma thing" in someone's face; the person who has been through some kind of trauma either gets tired of or doesn't have the energy of trying to "un-do" and "fight off" the "make-believe reality" that the well-meaning but clueless person keeps trying to foist on him in their interactions with him.
Sometimes a person who has never been through the same thing will know that someone else has been, will imagine how bad it must be for him, and then make the jump that he's "damaged for life" (when he well may not be). My point is that I can't help but wonder how often someone around the "PTSD person" not only creates more distance but maybe even a self-fulfilling prophecy.
Often, people who go through trauma find out how resilient and strong they are and/or what good coping skills they have. Someone who has not been through the same thing OR someone who doesn't happen to be strong or resilient OR those who have poor coping skills; cannot possibly imagine how things may be for the person with the "trauma thing".