I had tinnitus for a few decades. I may still have it to a lesser degree. I don't have anything to compare it to, because I no longer remember what normal was.
The tinnitus is similar to Eustachian tube dysfunction. I get a lot of popping and clicking in my ears. When I discovered that my experience with dp/dr, depression and anxiety
were a function of an epileptic syndrome, I also learned that a rare form of tinnitus could also be a symptom of this epileptic syndrome. This tinnitus is caused by abhorrent electoral
signals in the brain that cause mechanical movement of the components of the inner ear. Supposedly, this noise can be heard externally with special instruments.
I never had it established as fact, but I do believe this to have been the explanation for my tinnitus. So, tinnitus can be mechanical but is usually neurological.
Because of my personal experience with neuro-psychiatric illness, I usually recommend anyone with significant symptoms to get an EEG. For over 40 years, I received medical care
from several primary care physicians, psychologists, a neurologist, , and half dozen psychiatrists, and no one was able to provide an accurate diagnosis. No one
thought my symptoms were severe enough to recommend an EEG. Not even the neurologist I saw. When I sorted it out for myself and insisted I have an EEG, the results showed
I had "significant pathology in my dominant temporal lobe consistent with a history of epileptic seizure.". Then the opinion was that I was disabled. Well, let that be a lesson to us all.