Abstract
An analysis of 97 cases with vertigo was done about the nature of the nystagmus and vertigo, especially according to positional or positioning nystagmus, several cases were showed and discussed in detail.
Vertigo of peripheral vestibular disturbance was frequently a sense of whirling of the environment or the subject, spontaneous, paroxysmal and recurrent, accompanied with symptoms of autonomic nervous disturbance.
Direction of the nystagmus was most observed horizontal, in the next place mixed with combination of horizontal and rotatory movement. The nystagmus occured when changing patient's head revealed latent deviation of vestibular system.
Positional nystagmus had two main types, one is direction-fixed suggested peripheral and central lesions with laterality, and the other direction-changing, not only organic but functional disorders of central nervous system.
Vertical component of positioning nystagmus, occured when changing suddenly position of patient's head or body, meaned central lesions.
