Chapter

Benign Positional Vertigo

Robert W. Baloh, Vicente Honrubia and Kevin A. Kerber

in Baloh and Honrubia's Clinical Neurophysiology of the Vestibular System, Fourth Edition

Fourth edition

Published on behalf of Oxford University Press

Published in print December 2011 | ISBN: 9780195387834
Published online April 2013 | e-ISBN: 9780199322787 | DOI: http://dx.doi.org/10.1093/med/9780195387834.003.0010

Series: Contemporary Neurology Series

Benign Positional Vertigo

Show Summary Details

Preview

Benign positional vertigo (BPV), also called benign positioning vertigo and benign paroxysmal positional vertigo, is a common inner ear disorder resulting from abnormal stimulation of the semicircular canals (usually the posterior). The direction of the provocative movement and the appearance of the induced eye movements (nystagmus) identify the involved canal(s). The abnormal stimulation is due to the presence of detached otoconia (canaliths) moving in the canal endolymph under the influence of gravity. In order for positional vertigo to occur, two events must happen: (1) otoconia must be dislodged from the utricular macule, and (2) the head must be held in a critical position that allows the otoconia to enter a semicircular canal. BPV is not a disease; rather, it is a syndrome that can have multiple causes of the detached otoconia.

Chapter.  9738 words.  Illustrated.

Subjects: Neurology

Full text: subscription required

How to subscribe Recommend to my Librarian

Buy this work at Oxford University Press »

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.