It seems you guys have it a lot worse than I do :/ I only get it from really loud, continuous high or high mid noises like a powersaw or a drummer smashing the shit out of the cymbals in a small space. Same with loud conversation, like the the usual five-guys-and-two-chicks-drunk-as-apes, all trying to be louder than everybody else. I've been constantly paying attention to it and observing if it gets worse and if I should go to a doctor, but since it's been the same all these years I haven't seen one yet. I'll probably mention it when I start going to school again in January, just in case.