Otolith repositioning, a clinically effective treatment for benign paroxysmal positional vertigo. Benign paroxysmal positional vertigo, also known as otolithiasis, is a very common disorder of otogenic peripheral vertigo. It is a dislodgement of calcium carbonate crystals in the 3 semicircular canals of the inner ear, also commonly known as otolith dislodgement. When the head and neck move in position relative to the direction of gravity, the otoliths drift within the endolymphatic fluid, causing episodes of paroxysmal vertigo symptoms that usually last no more than one minute. An effective treatment for otoliths is to return the dislodged otoliths to their original position by resetting them. There are two types of clinical treatments: manual resetting and vertigo treatment device resetting.