"Billable diagnosis"... exactly.
+1 on the weird sensations on the central nervous system. That sounds like a virus, doesn't it?
+1 on the "nobody could see it". My derm "couldn't see anything", therefore, "mental illness".
Additionally, my hearing has been affected. If our dog barked, it was excruciating, as were most other loud sounds. I also had numbness in my tongue and feet, and my vision would mysteriously get blurry, then recover over the course of a week.
As I mentioned in my original comment, my wife and I both have it. There are only a few commonalities - 1) we both got the same covid vaccination on the same day, same place, and same manufacturer. 2) We both vaped at the time. 3) During the pandemic, we disinfected our hands with rubbing alcohol/water 50/50 mix.
Back to symptoms one more time, I have tinnitus now. It got really bad for a while, but has improved a lot. There are people who have ended their own lives due to tinnitus, and I can see why, but it was the least of my worries even at it's worst. Lastly, I have a strange coating on my tongue that comes and goes. I've been to my dentist looking for cause/solution, but he says everything looks remarkably good and has no clue what it is. The worse the tinnitus gets, the worse the coating gets and vise versa.