Actually I have to say I'm very sensitive to certain noises; like lots of people talking, or kids screaming etc will drive me really mad after a certain level,

Actually I have to say I'm very sensitive to certain noises; like lots of people talking, or kids screaming etc will drive me really mad after a certain level, it's not technically 'pain' but I really have to go away, fast when the level is passed... But it's not just that, if I hear a musician playing even so slightly off key, it's almost painful and I have to physically move away.. Same with singing... Off key xmas carols will have me running in no time :-) And it's definitely not being pedant or anything like that, it's really some bizarre reflex... And yes the level varies sometime; my assumption was that it might be linked to blood pressure, but I have no way to correlate that.