I don't know if anyone else does this but I have this problem with scratching my scalp until it bleeds... Haven't told anyone about it except when my hairdresser saw the scabs and commented on them - I said it was a stress thing (and maybe it is). I just can't really stop myself from doing it. Sorry if this is TMI but I find it strangely satisfying to scratch all around my hairline and also pull scabs off so that the cuts become bigger and bleed. Yes, I know this is unhealthy and not normal but I can't really help it... Does anyone else do something similar? I have been known to SI but it hasn't happened in a while... Maybe it's just an anxiety/nervous habit or something.