@kkinsley I read your post and I almost fell out of my chair. I know what the problem is because I can prove the “damage” to cranial nerves 7 & 8 is the cause. For years, I had a severe headache localized to one spot on the back of my head, but would sometimes radiate to certain areas of my head. I sought all kinds of treatments and diagnosis, therapies, drugs, and nothing worked except basic pain meds or anti inflammatoies and those stopped working when they wore off.
Finally I found a doctor who knew what was up and she did a series of 3 injections over 6 weeks of anesthesia and steroids (not sure the actual stuff, kind of like a spinal steroid shot) in to the nerves in my head around that area. Which nerves did she inject? You guessed it, 7 & 8. That was about a month ago and a shortly after the procedure, blood pressure went up, hands tremble, anxious /interval vibration feelings started, and my ears started constantly ringing. The anxious feeling is more like a “skin crawling” feeling. The only way I can describe it is it is similar to nicotine withdrawal when I quit cigarettes or taking some medications like expectorant or steroid dose packs. My heart feels beats like it would after heavy exercise or on a steroid pack. The trembling is mostly in my hands but other parts, mostly arm, shoulder etc will also tremble sometimes. It’s not like “the shakes” like you would see in some neuro illnesses but more like a vibration.
I think that the “damage” or change to those nerves have created those symptoms because nothing else makes sense and your only passing reference is the exact thing I did on purpose. No other description comes close. I am going in for a checkup in a few weeks so I will definitely post findings or thoughts. I would very much like to get in touch at least on email or messenger and keep in touch on this. It sounds like we just made big progress in diagnosing each others issue!
Also note: I know zero about the nervous system other than what my Dr told me. I’m pretty sure she did not actually inject 7 & 8 directly as the nerves she injected where cranial surface nerves, but those surface nerves are all around 7 & 8 and she touched on that in our discussion when describing everything in there and what she was doing and its effects. I think I got a little over zealous in my description. I will get more detail at my checkup.