From what you described, it sounds like you do have a pretty significant problem. Also there are a whole bunch of conditions that have similar names and symptoms, so you might want to look at a whole bunch of them... there's social phobia, social anxiety disorder, agoraphobia, and then probably a whole bunch of other things relating to phobias... xenophobia is the fear of foreigners etc... there's a lot of social stuff. Schizoid personality disorder wouldn't apply in your case; they don't like social things and stay as secluded as possible, but there's no anxiety.
So I would look into all of the social anxiety stuff... google it or whatever... there's a bunch of conditions. A professional of course knows best, but it's important to familiarize yourself with this stuff as well!
Kristina