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Benign paroxysmal positional vertigo (BPPV) has been a recognized clinical entity since the early 1900s and is probably the most common cause of episodic vertigo with a population incidence of ∼64 per 100,000 persons.1 BPPV is characterized by episodes of vertigo lasting about 5 to 30 seconds provoked by changes in head position with respect to gravity, such as rolling over in bed or looking up at a high shelf. BPPV is easily diagnosed using the Dix–Hallpike maneuver, which elicits a vertical-torsional nystagmus highly characteristic of this disorder.2
Before 1980, patients with BPPV were treated with vestibular suppressant medications and were advised to avoid the symptom-producing positions until they achieved …
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