I've been luckier than you, my physical hypersensitivities annoy me a lot, but not to the extent that I've been driven to using hard drugs. Every little irritation bothers me more than it should - itching, small aches and pains, some kinds of fluorescent lighting, unpredictable background noises, grease on my fingers, heat, cold, even needing to go to the toilet when it's really not desperate yet. Such things spoil a lot of my life.
On a bad day I might take a couple of ibuprofens, but I don't want to get dependent on them. Best coping strategy I've found is to get hyperfocussed on something that interests me. That seems to keep me from noticing a lot of the physicals.