Abstract
Paroxysmal positional vertigo is a frequent cause for consultation. When approaching these patients, we try to differentiate central from peripheral causes, but sometimes we find manifestations that generate diagnostic doubts. In this review, we address atypical paroxysmal positional vertigo, reviewing the literature on the subject and giving a provisional definition of atypical positional vertigo as well as outlining its causes and pathophysiological mechanisms.
Highlights
Benign paroxysmal positional vertigo is the most frequent cause of vertigo [1]
Other clinical represented in thepictures ladder.of atypical nystagmus have been described for BPPV, which were explained by the presenceofofatypical otoconialnystagmus particles in have different parts of the canals
The mechanism proposed includes the presence of particles of different sizes by the subsequent transformation to a typical lateral canal BPPV with direction-changing and densities in the same canal, with the larger ones trapped in the narrow area of the nystagmus
Summary
It is characterized by vertigo episodes of sudden onset and end, triggered by changes in head’s position with regard to gravity It is located in the labyrinth, and its cause is mechanical [2]. Nystagmus that changes direction useful during the test; the aforementioned clinica These elements are usually to positional differentiate pictures when they are typical These elements are usually useful to differentiate the aforementioned clinical pictures Bárány Society [1]). Pictures (see [1]), but provide a definition of atypical PPV and describe the variants found in and supported by the literature
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