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Periodic Alternating Nystagmus With Downward Beating NystagmusA Clinicoanatomical Case Study of Multiple Sclerosis
James R. Keane, MD
Arch Neurol. 1974;30(5):399-402.
Abstract
A 54-year-old woman with a devastating ten-month course of demyelinating disease exhibited periodic alternating nystagmus that gradually was replaced by prominent downward beating nystagmus. Multiple bilateral irregular shallow areas of demyelination scattered along the floor of the fourth ventricle, involving portions of all vestibular nuclei, are the probable cause of her unusual nystagmus.
Author Affiliations
Los Angeles
From the Department of Neurology, Los Angeles County/University of Southern California Medical Center, Los Angeles.
Footnotes
Accepted for publication Oct 15, 1973.
Reprint requests to LAC/USC Medical Center, Box 359, 1200 N State St, Los Angeles, CA 90033 (Dr. Keane).
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