A Rare Case of Anterior Semicircular Canal BPPV Resistant to Treatment: A Case Report and Literature Review.

ABSTRACT: Background and Clinical Significance: Benign paroxysmal positional vertigo (BPPV) most commonly involves the posterior semicircular canal (PSC), whereas anterior semicircular canal BPPV (ASC-BPPV) is rare, accounting for only 1-3% of cases. Most ASC-BPPV cases respond well to particle repositioning maneuvers (PRMs), with refractory presentations being exceptional and diagnostically challenging, particularly when differential diagnoses such as apogeotropic posterior semicircular canal BPPV (PSC-BPPV) or central causes must be excluded. Case Presentation: A 43-year-old woman presented with vertigo triggered by head extension and rolling in bed. Initial neurological and otoneurological examinations were unremarkable. During the left Dix-Hallpike maneuver, a vertical down-beating

SUBMITTER: Jocys J 

PROVIDER: S-EPMC12561029 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature