Ageotropic Horizontal Positional Nystagmus

BPPV is a common disorder, typically easily treated once identified.  The vast majority (over 90%) of cases of BPPV involve free floating debris in the posterior canal on one side. These types of BPPV responds well to the Epley maneuver. There are other, less common and less easily-treated variants of BPPV. Occasionally, the debris will…

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The Evolution of Canalith Repositioning

In the several years after Brandt and Daroff published their classic article, Physical therapy for benign paroxysmal positional vertigo, France became a hotbed of activity in developing techniques that would eventually become known as Canalith Repositioning. Several researchers began experimenting with movements (not exercises) intended to promote loosening and redistribution of otoliths from the semi-circular…

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