Dr. Anne Oaklander at Mass General just equates idiopathic with "idiot" , not knowing the cause, in her 2017 You Tube presentation on SFN which I also have and diagnosed at Cleveland Clinic. Think mine dates back to when I had a bad reaction from the Moderna booster shot. 5 months of steroids and then 10 months of Dupixent. The SNF continued from that point on in my mis section, legs and arms but not feet or hands like most. I had 9 ALA IVs but didn't help. approved in Germany for diabetic neuropathy and I am do not have diabetes. Trying to research if Dr. Oaklander has made advancements in SNF which she has been studying for some time now and think those nerves can be regenerated,