@chapanddrew8, Good evening. Yes, I have had the SFN skin biopsy. They were able to get enough material the first time on my left ankle. The test material was sent to Texas for analysis and it was quite definitive. I had a score of .09%.....not good.

This is not a painful test. It only took a few minutes and I got up and walked out. Not to worry.

Good luck to you.
Chris

Hello @chapanddrew8, thank you for your question. I've tested for small fiber neuropathy via skin punch. While I did test positive, I also was diagnosed with Central Sensitization Syndrome. CSS is sort of an umbrella to many different diagnosis from neuropathies to migraine to irritable bowel syndrome and TMJ etc. Are you familiar with CSS ?