I don't usually post here but in re-reading some info on Inosine and Sphingolin which I took for 3 months for "burning" from nerve damage from hip replacement and both these got rid of the burn. I still get some twitching now and then and 80% of thigh is still numb 5 yrs post op, but burn is gone.

Both these are mentioned for MS and PD and here is what Wiki says.

https://en.wikipedia.org/wiki/Inosine

I may have posted this before but don't recall for sure.