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What is benign paroxysmal positional vertigo (BPPV)?
Benign paroxysmal positional vertigo is a disorder characterized by paroxysms of vertigo and nystagmus on assumption of certain positions of the head.
Hearing tests are normal.
How is benign paroxysmal positional vertigo diagnosed?
The diagnosis is made by performing head maneuvers that elicit the patient’s symptoms and nystagmus.
The cause is calcification and dislocation of otoliths, which move freely in the semicircular canal, thus abnormally stimulating the hair cells within the semicircular canals.
