IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-5-25354 Original Research Paper Horizontal canal benign paroxysmal positional vertigo with canal conversion; Case Report Abu Nahleh Dr. Motasem Al Krymeen Dr. Halimeh Yamin Dr. May 2020 9 5 01 02 ABSTRACT

Benign Paroxysmal Positional Vertigo (BPPV) is considered as the commonest reason of chronic vertigo in the otolaryngology clinic (1). In the company of two different etiologies; either otolith (CaCO3 crystals) floating freely within the perilymphatic fluid of the semicircular canals (canalithiasis ) or stucked to the cupula of the semicircular canals (cupulothiasis). Mostly they present with periodic attacks of vertigo that’s triggered by positional changes in the head movement. The attacks are usually intense and severe. The posterior semicircular canal is the most repeatedly caught up canal (2). In case of horizontal semicircular canal BPPV,it is found to be as new diagnosis, with an incidence of 3–8% of all types of BPPV (3), HC–BPPV is not an exceptional condition. In our study we present a patient who was diagnosed to have horizontal canal BPPV. The patient was treated conservatively via different otolith repositioning maneuvers which are complicated by canal conversion. Finally and successfully he was treated with total declaration of symptoms.