Flickering, intermittent (at first) pure high pitched tone in my left ear, much gentler crystal-hum in my right ear. Not accompanied by hearing loss. I had it for four years and there was a terrible 1.5 year period where it was essentially nonstop. Cause was unknown but almost certainly not caused by noise, as I was pretty careful not to expose myself to loud noises/concerts and hadn't had any noise trauma when it suddenly began. The ENT visits went as they do for everyone else here. They did some tests and concluded "You have tinnitus!" "Okay," I said, "what do I do. Let's figure out what's causing this and stop it," because I foolishly believed that is what medicine is all about. "There's no cure or real treatment, your only hope is CBT which doesn't actually help the symptoms at all but essentially trains you to pretend it isn't a problem." they said. I gave them the middle finger and left. NOT HEARING THE NOISE was and is the only thing I considered an acceptable solution. Finally there was a clue: a party downstairs in the place that I lived that was making my sleep even worse, so I put a "white noise" Youtube video on. The sound was like a passenger jet engine and was about as loud as it would sound from within the cabin of the plane. It did the trick just fine to drown out the party. The next day I had severe hearing loss in my left ear. This is the first time I have EVER had hearing loss in either ear and the first time I had ever used a "white noise" youtube video. The worthless ENT of course dismissed the idea that the video could POSSIBLY cause what I experienced, decided it was a virus, and put me on steroids. The hearing loss went away in about 24 hours and was replaced by unusually nasty tinnitus which then settled in 3 days. This is how I discovered that my T was being caused, or at least fueled by, NOISE AT NIGHT. Not intense noise, ANY noise, especially steady "white" noise like a fan. I shut down the fan that I had been using almost constantly for all that time, and even the ceiling fan (I'll tell you this is not easy in the summer..), closed my windows at night, etc. My T went into a slow but unambiguous decline. No longer constant, then half on half off, then essentially gone with occasional "bad weeks". Then bad days. Then bad moments. This was 8 months ago. Currently, most days I do not even think about T much less hear it. I do not think I will ever stop enjoying the sound of silence, however I have no idea how many people my case may apply to and I expect it isn't many. But have hope and demand a cure. T is not a philosophical problem to be "reframed". It is a physical problem occuring in a physical space the size of your thumb. THERE IS NO EXCUSE FOR THE LACK OF A CURE, NOR ANY SUBTITUTE FOR ONE.