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Table 1. Diagnostic Criteria
Definite MD:
Two or more spontaneous attacks of vertigo, each lasting 20 min to 12 hours
Audiometrically documented fluctuating low- to mid-frequency sensorineural hearing
loss in the affected ear on at least one occasion before, during, or aer one of the
episodes of vertigo
Fluctuating aural symptoms (hearing loss, tinnitus, or fullness) in the affected ear
Other causes excluded by other tests
Probable MD:
At least two episodes of vertigo or dizziness lasting 20 min to 24 hours
Fluctuating aural symptoms (hearing loss, tinnitus, or fullness) in the affected ear
Other causes excluded by other tests
Diagnosis
