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Benign paroxysmal positional vertigo (BPPV) is characterized by brief episodes of vertigo that last less than 1 minute and are provoked by head movement. To examine the diagnostic accuracy of a simple set of questions, Korean researchers created a 6-item questionnaire and tested it on 578 consecutive patients referred to a university “dizziness clinic”; 32% ultimately received BPPV diagnoses, and the others received various other diagnoses according to history, neurotological examination, and video-oculography (all conducted by an expert in this field).
The first three questions asked whether the patient had (1) a sensation that the surroundings or the patient were spinning, (2) dizziness occurring mostly with head movement, and (3) duration…