I get burning all over my body including my head. I have temperature loss up my arms. I may have temperature loss other places too, but at this point I don't want to know anymore. My punch biopsy was in my legs (2 holes) and was negative.

The punch biopsy could miss the places where the fibers are damaged. Or like in my case, they did not take the biopsy from the body part that likely has the most change of showing damage.