I cant really figure it out; when i'm in some places with ppl i know well i'm getting very very nervous if i feel i'm in a condition where i feel somehow "trapped". For instance in the Church i need to sit on the outside of the pew, not inside "trapped" by other people, so that i feel that if i wanted, for every reason dunno head spinning (sometimes it happens to me when i cant sleep much due to my insomnia) i could go out for just a while. Thats it i start sweating and cant concentrate if i feel trapped, if i know i cant reach the exit and may be doing a bad figure in front of the ppl i know. When i go down to the underground i dont have any prob at all, because i know that if i wanted i could get out at every stop and then i'm there with ppl i dont know so i dont care, thats the reason i think that my problem is not claustrophobia....can you give me any help pls? Thanks.