superior canal dehiscence syndrome
Also found in: Acronyms.
superior canal dehiscence syndromeA condition affecting the inner ear caused by a thinning or loss of the temporal bone overlying the semicircular canal of the vestibular system, which may be due to trauma, neoplasia or, less commonly, congenital.
Autophony, dizziness, chronic vertigo, Tullio phenomenon, hyperacusis, conductive hearing loss, pulsatile tinnitus, brain fog, fatigue, headaches.
High-definition CT, vestibular evoked myogenic potential (VEMP) test, videonystagmography, electrocochleography.
Surgical resurfacing of temporal bone, or plugging of superior semicircular canal.
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