I tnink my son has this, as a child he refused to do any sports or anything not forced by the school because he was afraid he might make a mistake or not be good right a way. He would not play catch in the yard even because he was afraid to be seen. We tried to explain that all the kids were learning, but no go. He had a fear of insects and didn't want to go outside. He was on ritalin and we thought it was a side effect, he was in counseling for that. Finally we had a talk about whether he could handle it himself. He seems outgoing thses days, but he isn't really, he has learned to function and not stand out. So I think that sometimes we do just learn to fit in.