benign paroxysmal positional vertigo
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
Brief episodes of vertigo triggered by head movement, caused by displaced otoconia in the semicircular canals.
The Dix-Hallpike manoeuvre reproduced the torsional nystagmus of benign paroxysmal positional vertigo.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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