 Fauquier ENT News
Benign paroxysmal positional vertigo, or BPPV, is one of the most common causes of dizziness. It happens when tiny calcium crystals in the inner ear, called otoconia, become dislodged and move into one of the semicircular canals, typically the posterior semicircular canal. Usually, this occurs only on one side. However, rarely both posterior canals on each side can become affected resulting in bilateral posterior canal BPPV. Treatment requires the displaced crystals from each side to be repositioned in order to fully resolve the vertigo.
In order to diagnose bilateral BPPV, the Dix-Hallpike maneuver is first performed as shown.
If nystagmus, the rhythmic twitching of the eyes, appears when the head is lowered to one side...Read the whole entry... » 
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