“…We are certainly not the first to report a distal symmetrical polyneuropathy in the setting of collagen vascular diseases including classic polyarteritis nodosa 11 7,23,28,31,331, rheumatoid arthritis [5, 21,22, 26, 35, 44, 461, and systemic lupus erythematosus [3,11,20,24,25,27,30,431. However, it is difficult to determine the pathogenesis of the nerve changes in many of these previous reports, as nerve biopsies frequently were not done, and in other cases the neuropathic condition was said to be secondary to a demyelinating, toxic, or metabolic process [l, 19, 20, 30f.…”