Abstract
Central nervous disorders in the vibration syndrome (VS) due to cerebrovascular anomaly are discussed.
Incidence and mortality of cerebrovascular disorders and prevalence of transient ischemic attacks, examined between patients with VS and age-matched controls at rural communities in Tottori Prefecture during a period between 1976 and 1981, showed no significant differences.
Cases of VS with Raynaud's phenomenon were attacked by vertebrobasilar insufficiency mainly characterized by sudden onset lasting 5 min or less and often by recurrent dizziness and unbalanced gait. Incidence of the insufficiency was significantly higher than controls aged 40 to 49 (p<0.01). Furthermore, severe cases of VS presented significantly higher incidence of abnormal rotation in the closed-eye 50 stepping test. These facts suggest that there might be subclinical balance disturbance due to insufficiency of cerebral circulation in the vertebrobasilar area.
