I can't address your post in detail, but I would like to suggest one thing for you to try.

Avoid heat in the form of hot baths, hot tubs, heating pads, saunas, etc. I learned this from a very interesting chiro, who explained to me how damaged nerves are inflamed by heat. If there is inflammation present in other tissues, it will accelerate with heat application.

I know it sounds difficult if you are chilled, but wrapping yourself up in a warm blanket is much better as your own body heat will warm you. It just takes a few minutes longer.

A warm drink (not hot) will also help internally. New studies suggest very hot foods/drink can lead to esophageal cancer, so only warm drinks are best.

Warm baths are allowable but limit them to 15 minutes or so.

One can get into a very painful spiral if using heat too much. So give limiting and avoiding heat for a while and see what happens.