[Familial paroxysmal ataxia].

The paper provides clinical and paraclinical findings on 3 patients from one family (two brothers and father) suffering from familial paroxysmal ataxia. The authors observed psychosensory disturbances not typical, according to the literature for attacks of ataxia, dysarthria and nystagmus. The evidence obtained on cerebral and spinal evoked potentials made it possible to diagnose multilevel impairment of nervous impulse conduction in the somatosensory system which may be due to metabolic disturbances underlying the disease.