单词	benign paroxysmal positional vertigo
释义	benign paroxysmal positional vertigo noun variants or benign positional vertigo : a condition marked by short, recurrent episodes of vertigo and nystagmus brought about by a change in head position that is caused by the movement of small crystals of calcium carbonate in the inner ear that have become dislodged from the utricle and entered 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 abbreviation BPPV, BPV see epley maneuver Word History First Known Use 1961, in the meaning defined above Medical Definition benign paroxysmal positional vertigo noun variants or benign 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 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 —abbreviation BPPV, BPV
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