What is the mechanism causing benign paroxysmal positioning vertigo (BPPV)?

Updated: Mar 13, 2017
  • Author: Hesham M Samy, MD, PhD; Chief Editor: Robert A Egan, MD  more...
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The mechanism of BPPV can involve canalithiasis (otoconia floating in the endolymph) or cupulolithiasis (otoconia adherent to cupula). The most commonly affected canal is the posterior canal (90% of cases); the horizontal canal may also be affected, but to a lesser extent.

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