Skip to main content
×
Home
    • Aa
    • Aa

Head rotation evoked tinnitus due to superior semicircular canal dehiscence

  • E-C Nam (a1) (a2), R Lewis (a3), H H Nakajima (a2) (a3), S N Merchant (a2) (a3) and R A Levine (a2) (a3) (a4)...
Abstract
AbstractIntroduction:

Superior semicircular canal dehiscence affects the auditory and vestibular systems due to a partial defect in the canal's bony wall. In most cases, sound- and pressure-induced vertigo are present, and are sometimes accompanied by pulse-synchronous tinnitus.

Case presentation:

We describe a 50-year-old man with superior semicircular canal dehiscence whose only complaints were head rotation induced tinnitus and autophony. Head rotation in the plane of the right semicircular canal with an angular velocity exceeding 600°/second repeatedly induced a ‘cricket’ sound in the patient's right ear. High resolution temporal bone computed tomography changes, and an elevated umbo velocity, supported the diagnosis of superior semicircular canal dehiscence.

Conclusion:

In addition to pulse-synchronous or continuous tinnitus, head rotation induced tinnitus can be the only presenting symptom of superior semicircular canal dehiscence without vestibular complaints. We suggest that, in our patient, the bony defect of the superior semicircular canal (‘third window’) might have enhanced the flow of inner ear fluid, possibly producing tinnitus.

Copyright
Corresponding author
Address for correspondence: Dr Robert A Levine, Eaton-Peabody Laboratory, Massachusetts Eye & Ear Infirmary, 243 Charles Street, Boston, MA 02114-3096, USA. Fax: +1 2617 720 4408 E-mail: Robert_Levine@MEEI.harvard.edu
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

1H Cullington . Tinnitus evoked by finger movement: brain plasticity after peripheral deafferentation. Neurology 2001;56:978–79

4LB Minor . Clinical manifestations of superior semicircular canal dehiscence. Laryngoscope 2005;115:1717–27

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

The Journal of Laryngology & Otology
  • ISSN: 0022-2151
  • EISSN: 1748-5460
  • URL: /core/journals/journal-of-laryngology-and-otology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords: