Abstract
The characteristic of cervicovestubular syndrome is paroxysmal vertigo provoked by the turning of the cervix. For many patients with this syndrome, the authors performed the perivascular sympathectomy of “the affected side vertebral artety” and noticed remarkable effects for paroxysmal vertigo. From the results of operation, it was suggested that the origin of vertigo would be the abnormal irritation of the perivascular sympathetic nerveplexus caused by the cervical turning. This sympathetic fibers originate in the ipsilateral superior cervical ganglion. So the experimental results which stimulated the superior cervical gangion of guinea pigs were discussed.