benign paroxysmal positional vertigo
Quick Summary
Benign paroxysmal positional vertigo (BPPV) is a common inner-ear disorder that causes brief, recurrent episodes of vertigo. This sensation of spinning occurs when there is a change in head position. BPPV is caused by the movement of tiny calcium carbonate crystals within the inner ear. These crystals, normally located in the utricle, become dislodged and enter the semicircular canals, leading to the vertigo and nystagmus (involuntary eye movements). Doctors often treat BPPV with head-movement exercises, such as the Epley maneuver.12
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.