[Hereditary areflexic dysstasia (Roussy-Lévy syndrome)]

Clinical and electroneurographic investigations of 22 cases of hereditary areflectory dysstasia (Roussy-Levy's syndrome). 20 cases of Charcot-Marie's neural amyotrophy and 8 cases of Friedreich's familial ataxia were carried out. In the patients with Roussy-Levy's syndrome, the speed of the impulse conduction along the peripheral nerves of the extremities, as well as the amplitudes of evoked potentials were lowered to the greatest extent: this was an evidence of nosological independence of the disease.