My case isn't as severe as some of the terrible conditions mentioned here, but my tinnitus was spiking about a month ago and I was using some high pitched cricket/cicada white noise to get through it. After stopping it, I realized I could still hear the sounds playing in my head.
I panicked and went to the ENT as soon as I could, which in hindsight, only really made things worse. I got a prescription of Prednisone to be 'safe' as I figured, but now I'm starting to wonder if Prednisone had something to do with these distortions I'm hearing. I also still have the beeps from the hearing test playing in my left ear which was a really nice parting gift to remind myself never to go to an ENT office again.
In my case, it's like a high pitched screeching, almost like an auto-tuned cricket. I've found it most apparent in the distant noises of a television or if I put the fan next to me on its highest setting, it really aggravates the phantom crickets in my head. I used to enjoy sleeping with white noise, now it's harder than sleeping with just my tinnitus (which had just begun to subside).
I consider myself blessed that most conversation and music sound normal when I see how horrible some people here have it, but I'm perpetually worried that it'll stagnate or worsen. I see many recommending avoiding headphones, yet they might be the only solace that I have. Many sounds outside of the headphones are warped and loud while noise from the headphones themselves seems normal. While wearing them, my tinnitus also becomes fairly pacified.
Really not sure what I should do since music helped me focus on work greatly, and all my pastimes revolved around it in one way or another. I could cut myself off for a few months and see where I end up, but if my condition deteriorates further, I'll regret not savoring it while it was within a tolerable threshold.
Also, I was scheduled to have my wisdom teeth removed in a week (which I discovered were responsible for some of the buzzing tinnitus I was experiencing), but now I don't see any choice but cancelling that appointment in light of my recent developments, and in fear of making it worse.