anterior bppv vertigo

Anterior Canal BPPV

Anterior canal BPPV is quite rare, and is estimated to account for 1 to 2% of cases of BPPV. The primary diagnostic feature is the fact that the nystagmus associated with anterior canal BPPV is torsional and downbeating, whereas the more common posterior canal BPPV nystagmus is torsional and upbeating. This is not always easy…

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Downbeat Nystagmus on Rising: Part II

We continue with the case of the mysterious downbeat positional nystagmus. The patient returned after the weekend, reporting little change in his symptoms, which included brief vertigo with rolling over in bed, and ongoing unsteadiness on his feet for the past three months. At that point, I abandoned my suspicion of the otoconia having settled…

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