I have SFN and it is I believe autoimmune related, I have lots of symptoms for sjogrens but the rheumatologist I saw wouldn't diagonose it because I have normal blood test results which is frustrating. I have pain all over in random patches, I take pregabalin and have three monthly lignocaine infusions for the nerve pain.
Unfortunately I have developed widespread joint pain which is not being managed at all 😔
I also have dry eyes and eyelid dermatitis which is managed with frequent eye drops and creams 😒