PS: Where on the body are biopsies done? I am in so much pain I can't imagine even more!! I suspect it would be feet and/or lower legs? I know the Rheumatologists and Neurologists feel each other should manage neuropathy. I worked in health care over 20 years and have a zillion specialists, so I know this goes on between the two specialties. I have autoimmune Dz and Fibro as well as a myriad of other diseases and conditions, many of which are painful and 3, are rare. Warm regards, Sunnyflower