Mine was triggered at school. I hate thinking about it. I was in a textiles class, and there was this girl that i just started to become friends with, and i never felt nervous talking to her once until this day she said something to me (i dont remember what) i responded, and then this girl sitting at the table with us says "DAMN! You're face is RED!!! Oh my god! Its getting even redder!" and then all i could say was "Really?" and then after that i just put my head down for the rest of the class. I was embarrassed because she was loud about it and everyone was looking at me, including the girl that was talking to me. Then i just started to be scared of talking to people because i always thought my face would turn red. So i started avoiding that girl, and then i started avoiding everyone else. I hate that memory! Then to make it worse, that same girl that did that pointed out that my face was red again a couple weeks later!