[Neuropathic pain syndrome: clinico-neurophysiological analysis].

Neurophysiological study of all links of afferent somatosensory systems in neuropathies of different genesis was conducted. Patients with alcoholic (APN) and diabetic (DNP) polyneuropathies have been examined and selected as follows: 19 patients with intensive spontaneous pain syndrome (scoring over 6 on VAS); 20--without pain; 22 patients with allodiny caused by neuropathic pain and 38--without allodiny. Control group included 20 healthy subjects. Symptom complex of pain syndrome encompassed pronounced disorders of cutaneous sensitivity, minus symptoms in deep sensory sphere and high depression level. Neurophisiological appearances of spontaneous pain syndrome in APN and DPN are characterized by generalized mixed damage of peripheral sensible nerves and of 1 beta-afferents of H-reflex arch. Insufficiency of function of pain control system was mainly of deafferent character. Allodiny and spontaneous pain syndrome are reciprocally combined, the former being distinguished by involvement in pathology of 1-[symbol: see text] fibers (motor nerves and efferent links of H-reflex).