VII Paroxysmal Positional Nystagmus

Abstract
Eighty cases of paroxysmal positional nystagmus are reported. According to the pattern of this nystagmus, it is suggested a classification of symptoms into 4 types type Dix-Hallpike, type Stenger, divergent and convergent types. These types have shown a certain correlation to the presumed site of the vestibular lesion. The pathophysiological basis of this symptom is discussed.

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