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Reza Sheikholeslam-Zadeh
Brussels, Belgium

Arch Otolaryngol Head Neck Surg. 1996;122(2):206-207.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

I was preparing my thesis for graduation from a faculty of medicine. The subject I chose was on benign paroxysmal positional vertigo (BPPV). I did a retrospective study of 201 cases.

I learned that it was Barany¹ in 1921 who described BPPV for the first time. Dix and Hallpike² brought further precisions and introduced the diagnostic maneuver. Schuknecht³ introduced cupulolithiasis for explaining the syndrome. Hall et al⁴ proposed canalolithiasis because the first theory did not explain the different characteristics of BPPV.

Some authors have compared cupulolithiasis with positional alcohol nystagmus (PAN) and since the former presents differently from PAN, they questioned the validity of cupulolithiasis. It seems that there are some differences between the two phenomena. On one hand, BPPV is a progressive phenomenon, the deposition of particles is limited to a small part of the cupula, and there is no direct central effect in cupulolithiasis. . . . [Full Text PDF of this Article]

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