--that a medical professional told you that you can't have small-fiber neruopathy in your feet and hands--the small, unmyelinated fibers that subsume the sensations of pain and temperature are all over the body, wherever there is skin, and small fiber neuropathy can be felt in any part of the body.

Perhaps a second opinion is called for, with a more expert specialist, or at a tertiary center that specializes in neuromuscular conditions?