The Use of Vertigo Reproduction Video

The observation of spontaneous nystagmus is important in diagnosing vertigo. However, in some cases, nystagmus disappears before the first examination. In order to predict nystagmus during an attack of vertigo, a vertigo reproduction video system was devised and used to diagnose vertigo.Regarding horizontal-rotatory nystagmus and rotatory nystagmus, the nystagmus conditions estimated by the vertigo reproduction video system were in accordance with actual nystagmus.A screen possibly corresponding to horizontal-rotatory nystagmus was selected in Meniere's disease cases and that corresponding to true rotatory nystagmus was selected in benign paroxysmal positional vertigo.Patients suffering from vert ebral-basilar circulation insufficiensy showed various types of vertigo.This video system is very useful in making differential diagnosis between Meniere's disease and benign paroxysmal positional vertigo and in judging abnormal sides.