Cupulolithiasis as an Alternative Mechanism for Pseudo-spontaneous Nystagmus in Horizontal Canal Benign Paroxysmal Positional Vertigo

Felix K Schwarz, Erich Vyskocil, Bela Büki, Gerald Wiest

Research output: Journal article (peer-reviewed)Journal article

Abstract

Benign paroxysmal positional vertigo of the horizontal semicircular canal may present a differential diagnostic challenge. In addition to the classical positional nystagmus, a persistent nystagmus in a seated position occasionally occurs, so-called pseudo-spontaneous nystagmus (PSN), which can be mistaken for a central or peripheral spontaneous nystagmus. We report a case with cupulolithiasis of the horizontal semicircular canal presenting with horizontal PSN in a sitting position, with implications for a new pathomechanism of PSN.

Original languageEnglish
Pages (from-to)2473974X221089847
JournalOTO Open
Volume6
Issue number1
DOIs
Publication statusPublished - Mar 2022

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