Paroxysmal positional nystagmus is the most prevalent peripheral vestibulopathy and has a lifetime frequency of 2.4%. BPPV is characterized by brief attacks of severe vertigo brought on by a change in head position. When minute calcium crystals called otoconia loosened beyond their normal positioning on the utricle, an inside ear sensing organ, it caused hearing loss.
Although paroxysmal positional nystagmus is exceedingly uncommon in infants, it can afflict people of any age, particularly the elderly. The great majority of incidents occur for no apparent cause, with many patients reporting how they were merely getting out of bed one day when the room began to spin.