Usually benign: probably was positional, due to changes in fluid balance in the canals of the inner ear, and the effects little floating crystals then have, in those canals. Recurrence should prompt you to a Dr. Could be due to head trauma, allergies, ear, sinus, throat, and other respiratory infections. Rarely, supplements or meds. Many times no identifiable source. Get well.
Answered 1/19/2015
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4 doctors weighed in across 2 answers
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