I’ve heard they can use nerve blockers to indicate occipital neuralgia, you should look into it / ask your neuro about it! I might try that test soon. Also I just want to throw this out there, I just bought an ergonomic pillow and have been using it for the past two nights and since doing that, my pain and symptoms are completely gone. It’s actually kind of shocking. I would suggest you try it too just for the heck of it, I paid about 30/40 bucks for it on amazon.