this happened to me once but the circumstances were a little different...when i was around 16 and sitting in science class the group behind me started hitting me around the back of the head so i moved and told them where to go and they kept following me and wouldnt stop hasseling me...so i had a panic attack and couldnt stop coughing, i literally cracked...this was going on for a number of months and even when i defended myself it all caught up with me and it came down to that one moment .....it was just one of those horrible moments that still effects me now, i think its why i still carry that paranoia with me.....
again its a little off topic but im certain i experianced a full on panic attack in front of the entire class, im happy to say that since then ive never come close to anything that dramatic.....but when im around large groups of people i do sweat and i struggle to focus, i dont think ive ever let go of those days, especailly in new environments around egos....its the root of my SA issues i feel, im trying to forget my past now...i need to erase it and move on....im sure that people have had worse problems then that