I have autoimmune small fiber neuropathy, what is best treatment?

Depends on cause: There are a number of possible causes for this - diabetes, obesity, alcoholism, and various other autoimmune conditions. Optimal relief depends on the best possible management or correction of the condition that is the cause. So, work with your provider as well as you can to treat that - the neuropathy improvement will help you know if you've been successful. Best!

Talk to your doctor: There is no current treatment to cure autoimmune small fiber peripheral neuropathy, however, intravenous immunoglobulin (IVIG) therapy is often used as is plasmapheresis. Each has potential risks/benefits, which you will need to understand before choosing either therapy or an alternative therapy. Speak to the doctor who ordered the diagnostic test(s) for recommendations. Hope you feel better soon!