benign paroxysmal positional vertigo

noun
variants: or benign positional vertigo

Medical Definition of benign paroxysmal positional vertigo 

: a condition marked by short recurrent episodes of vertigo and nystagmus brought about by a change in head position that is thought to be caused by the movement of small crystals of calcium carbonate (otoconia) in the semicircular canals Doctors eventually told her she probably had benign paroxysmal positional vertigo, an inner-ear disorder, and gave her head-movement exercises to treat it.— Sandeep Jauhar, The New York Times Magazine, 6 May 2001 Benign positional vertigo, the most common type of vertigo, is caused by a clot of free-floating debris, usually in a posterior semicircular canal.— John R. Hotson and Robert W. Baloh, The New England Journal of Medicine, 3 Sept. 1998 abbreviation BPPV, BPV

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