[Incidence of neuropathies in so-called rheumatoid vasculitis]

40 patients with so-called rheumatoid vasculitis, a special form of the course of rheumatoid arthritis with high rheumatoid titres and inclination to extraarticular organ manifestation were clinico-neurologically and electro-diagnostically examined. Neurologically in 10 patients a neuropathy was found, in which case polyneuropathies numerically prevailed. By means of the additional electromyographic and electroneurographic examination in altogether 75% of the patients pathological findings and thus a participation of the peripheral nervous system could by proved. The aetiology of the individual disturbance of the nerve function remains open. Questions of the pathogenesis are discussed.