I definitely have this condition. I have several sounds that others can tune out, but for me, some of them, like people who scrape their teeth on a fork – I have to physically leave the table if they’re unable to stop, after asking them, nicely! However, my most common trigger is rubbing sounds. Someone who runs fabric, like their pants, or tubs their hands together – especially if they’re dry hands that make an especially harsh sound. I literally lose my mind if it’s bad. If I’m trapped, like I a subway, I end up holding it in, until I usually EXPLODE, and say to a COMPLETE STRANGER “CAN YOU PLEASE! STOP! DOING THAT RUBBING!?! YOU’RE DRIVING ME CRAZY!” I know this sounds like I’m crazy, and they have ALWAYS stopped, probably becase I am kinda crazy by the time I get to that point.