Boiler1993, my symptoms also started when I was young, about 21 and I'm 24 now. I don't have a diagnosis yet (no biopsy) but I was telling myself it can't be SFN like my doctor thinks because I'm too young. Now I have to admit I'm a little disheartened by your story, knowing that I can no longer tell myself that, but I also feel less alone, so hey, maybe that cancels out. I'm still not convinced it's SFN though because I do not have pain, only tingling, numbness and twitching, and it actually seems to improve when I run.

I am extremely scared and I would love to hear if you ever figure out what's wrong. There's gotta be something making us have this at such a young age.