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Five subtypes of benign paroxysmal positional vertigo.

H Ichijo1

  • 1Ichijo Ear, Nose and Throat Clinic, Hirosaki, Japan.

The Journal of Laryngology and Otology
|August 5, 2021
PubMed
Summary
This summary is machine-generated.

Benign paroxysmal positional vertigo (BPPV) more frequently affects the lateral canal than the posterior canal. Sleep-related factors, particularly awakening, are strongly associated with the onset of BPPV across all subtypes.

Keywords:
CanalolithiasisCupulolithiasisOnset TimeSemicircular Canal

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Area of Science:

  • Neurology
  • Otolaryngology
  • Vestibular Disorders

Background:

  • Benign paroxysmal positional vertigo (BPPV) is categorized into five subtypes based on positional nystagmus.
  • These subtypes include lateral and posterior canalolithiasis, and lateral and posterior heavy/light cupula variants.

Purpose of the Study:

  • To determine the relative prevalence of lateral versus posterior canal BPPV.
  • To investigate the etiology of BPPV by examining the onset timing of each subtype.

Main Methods:

  • A prospective study involving 512 consecutive patients diagnosed with BPPV.
  • Patient interviews were conducted to gather data on the onset time of vertigo symptoms.

Main Results:

  • The lateral canal type of BPPV was more prevalent (55.5%) than the posterior canal type (44.5%).
  • Time of awakening emerged as the most frequent onset time across all BPPV subtypes.

Conclusions:

  • The incidence of lateral canal BPPV surpasses that of the posterior canal type.
  • The etiology of BPPV is significantly linked to sleep, with awakening being a common trigger.