The frequencies of sound right above the normal human hearing range cause a horrible reaction which requires me to do something to release endorphins or go completely crazy.
No, I can not hear them, but they drive me crazy none the less.
They are most commonly produced through whistling, but also by babies & children screaming/shrieking, and even untrained sopranos.
It produces a rage response, which I've learned to sublimate over the years, but also causes a horrible feeling like an itch inside my chest that I can't scratch which will only go away with the release of endorphins.
To get the endorphins I require when exposed to the offending frequencies, I generally bite my fingers, but if it goes on for long enough that's not enough so I bite my arms.
This is effective because pain causes the brain to release endorphins in response, and it's the least socially unacceptable way of getting endorphins in a hurry that I've found, even if people look at me strangely when they see me biting myself/trying to cover my ears.
However, if someone does it on purpose, I can not necessarily sublimate the rage response, so it's possible for someone to deliberately goad me into a (potentially violent towards them) meltdown by doing so.
The worst part about it is that lots of NTs whistle without even noticing they're doing it, and even people who know I have a problem with it do so without realizing it.
Sure they appologize, but the damage is done, my mood is ruined, my concentration is wrecked, and I have bite marks on my fingers and/or arms.
Ain't being an aspie grand?
*sigh*