I post here a lot but will respond to this as anon...
Before program I loved to go outside, go places, and meet people. Now, i pretty much keep to myself and stay inside. When I meet with friends, they usually come over to my place. You won't see me around large groups of people (as in more than two or three), and you definitely won't see me in a bar or a club (although i loved to go to these places on occasion before program). In program, groups of people were usually hostile and confrontational... there was nobody I could trust, and so I learned that the only place I could really be safe was alone.
I used to be confident enough to approach girls and ask em out, but not anymore... Any type of non-program-approved affection was taboo, so I learned to avoid it to the point where the suppression I learned stuck... That and the fact that i'm just not quite the same anymore, and anybody i would date would have to be tolerant enough to understand the quirks in me as a result of program. I know all too well that the way I was taught to interact with people in program was not at all normal. When I came out of program I felt like I was in culture shock... I'm sure the solution to solving all this is to just "do it" and go out, but whenever I do i'm too nervous, too anxious, too jittery, and it shows.
Insomnia? yes... Nightmares? used to... Stomach problems? no... Depression? yes, but not that bad (perhaps it's the prozac, or perhaps i'm just used to it).
Some say it's permanant damage, some say it gets better in time, but to answer your question simply... Yes... Many, if not most, people around here have experienced what you describe to some degree or another.