What is the role of skin biopsy for evaluating small fiber neuropathy in patients with rheumatic disease who have treatment recalcitrant pain?  

I have a shared decision-making discussion with the patient, especially alluding to the fact that the result would not change my therapy (i.e., use neuropathic analgesics for treatment) for small fiber neuropathy (SFN). Where I find it especially useful is in a patient with systemic lupus (SLE) or ...