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

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Felix K. Schwarz¹  Erich Vyskocil²  Bela Büki³  Gerald Wiest¹ 

[1] Department of Neurology, Medical University of Vienna;Department of Otorhinolaryngology–Head and Neck Surgery, Medical University of Vienna;Department of Otolaryngology, Karl Landsteiner University Hospital

关键词: benign paroxysmal positional vertigo;    pseudo-spontaneous nystagmus;    horizontal semicircular canal;    cupulolithiasis;   

DOI  :  10.1177/2473974X221089847

学科分类：社会科学、人文和艺术（综合）

来源: Sage Journals

【 摘 要 】

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.

【 授权许可】

CC BY|CC BY-NC