Sorry, to read OP, that you have same symptoms as the rest of most of us. Tinnitus, has no known cure for it as of yet only remedies can calm it for the individual. I read that Orange juice, vitamin C can help and it's a good healthy drink as well.
I have read through all the 5 soon going on for 6 pages of everyone that has same, Tinnitus issues.
For myself I got it due to
Battlestar Galactica in Sensurround 120dB at the local ABC screen 1, Bournemouth, UK, 1979, as I never been exposed to any high SPL dB at anywhere else at age 11, I've heard nothing else but Hisssing sound
mostly at night, in bed knowing now the noise background level would be quiet and I hear this Hisssing sound noise. Mid 90's it started getting to me and doctor, says sounds like, Tinnitus with no cure for it.
Today I can more less narrow the frequency which sounds like narrow band filtered pink/white noise with crossover slopes each side and I hear this narrow band Hissing sound/noise. At around 8KHz or 9KHz it is hard to get mic test gear inside to actually pinpoint it but I have done my own testing since most of these doctors, may not have it, some may have it and try more to help as they are looking for the possible solution for a cure?
Around 2000's it got to me where I couldn't have my lunch after doing some tree surgery with chainsaw, wearing earplugs and ear defenders. It suddenly occurred to me, where I cupped my hands around my mouth and one side of my ear as I have it in both ear/sides. cupped my hands around mouth and ear and started to make hissing sound while trying to mimic the frequency with my lips and did that for both ear/sides and WOW the inner ear noise dropped down... Oh what a relief
......... But ........ It started to slowly rise back up again
. It did tell me something thou it acts like an Audio Compressor more like Audio Limiter if a loud sound is loud set the Audio Limiter play that scene in movie again and loud sound stops at the threshold setting on the Audio Limiter with Compressor it slowly rises up the lower softer dynamic sounds, If any of that makes any sense to anyone?
Bottom line is. We all have Tinnitus, cos we didn't held the
warnings! If loud sound be it, whatever could be a vast list of possibles, for me it was
Sensurround with that rubbish movie
Battlestar Galactica at 120mins running time and thee most intense use of
Sensurround at frigging 120dB isn't cool or nothing clever or smart about being exposed to that SPL dB level. Sure I seen
Earthquake 70mm six-track
Sensurround early Feb, '75 at least 4 times and never noticed that hissing noise and movie also around 120mins but has the less usage of
Sensurround even thou the Big One lasted 10 mins of 120dB! Most movies today can't equal that ,most are shorter time between loud moment scenes. Movies many some have gotten LOUDER between Dolby A-type then moving into Dolby SR era then the digital sound formats Getting even more
LOUDER and for what? I just hope all those re-recording mixers have it bad cos I have little pity for any of them. F, you Universal pictures and that rubbish movie, which of course I do have on bluray 1.1
Sensurround cos I am curious about it and how it managed to ruin my life.
I wear earplugs when using the electric drill often when using a handsaw as those sounds are loud, louder than a movie soundtrack, cos movie soundtracks are rubbish the sound designers are rubbish cos the movie doesn't sound realistic, Yes I like to Bash movie soundtracks mixers now for my life that they have ruined and yet I have 168 JBL speakers in my THX home cinema cos they tuned me into a basket case, F, you movies!