Abstract
Twenty-five patients with vertigo were treated with intravenous injection of xylocaine. Twenty-four patients of them had vertigo of peripheral origin and another one was diagnosed as central origin. The male patients were injected 3ml. of 2% xylocaine diluted with 20ml. of 20% glucose solution. The females were injected 2ml. of 2% xylocaine and the same amount of glucose solution.
Positional nystagmus of fourteen cases (56%) was vanished or decreased in its scale or frequency after the first injection. The positional nystagmus was observed again in the next day of the injection, but it seemed smaller and weaker. Repeated injection of xylocaine showed increased effect on positional nystagmus (84%). Vertigo, headache and tinnitus disappeared together with nystagmus. There were no complications by the injection of xylocaine.
