Hello Elaine,
I have not been diagnosed yet with SFN but I suspect I have it. I have had burning in my arms for a few years but off and on. After breaking my left arm in a fall, I experienced increase burning in both my arms especially at night. I suspect I have an autoimmune issue because I am catching every bug around. This is the second severe cold around since Christmas and a stomach flu. Of course I also experience fatigue and depression along with the pain. Is your Duke Research Immunologist local. I would like to maybe get a consultation. Thank you for your help!
Elisabeth