When my grandmother was being diagnosed with neuropathy they did some sort of nerve conduction study on her. She said it was rather painful. I once had a nerve test and a muscle test. One was they stick you with a pin and test the electrical impulses, I think that was the nerve one?? Neither test hurt me, just a tiny but of discomfort. I only mention those tests, because I was upset my grandmother let the doctor continue with her test. There was no reason for her to endure the test after she found it to be quite painful, because she already knew she had numbness and pain.
I agree they can do CT or MRI to see if any discs are bulging, that sort of thing. Although, pain above the neck would not be a disc, but I think it can be muscular stemming from neck problems.
You’re already taking the B complex. Obviously, the most worrisome is B12 deficiency as a possible cause if nerve problems. I’m sure your doctor will test your B12 level. I switched to drops recently and my B12 level is better than ever.
My gut feeling (just a gut, no real medical experience or knowledge) is maybe resting the area is worth trying. Obviously, talk to a doctor about it. Don’t lift anything over ten pounds, when you lie down support you neck well, even if it’s just a small rolled up towel behind it. I have read that for carpal tunnel it is recommended to completely rest the wrists for two weeks and see if it helps.
In my own experience with injury. Near total rest of the area has always significantly helped me. I don’t go immobile, I never wanted the muscles to atrophy, but resting always helps me. I’ve found this when I had a lower back injury and a neck and shoulder injury.
However, I can’t compare my specific situations to yours. It might relate it might not.
Is there a chance you have trigeminal neuralgia? Was that ever mentioned? You said headaches, but I am assuming it was not the trigeminal nerve?? That is usually described as face pain not headaches, so I assume no.
Does the nerve pain feel like a pin inside? Like a quick jab from a long pin from the inside out towards your skin? Or, is it pins and needles like your body part is asleep?
I feel for you. Neuropathy and various nerve problems are miserable.
Check sugar levels too. That’s another your doctor would definitely check anyway. And thyroid.
I just threw a lot of thoughts out. Like I said, I don’t know a lot about nerve things. I figured maybe something might make sense or be worth looking into.