Traumatic superior semicircular canal dehiscence syndrome: case report and literature review.

Superior semicircular canal dehiscence (SSCD) syndrome was first reported in 1998 by Minor and comprises a spectrum of auditory and vestibular symptoms as a result of 'mobile third window' mechanism. The aetiology of SSCD is debated, but persistent infantile microstructure of the temporal bone was suggested. However, some authors related a 'second event', such as closed head trauma, temporal bone fracture and sudden increase in the intracranial pressure to the precipitation of its symptoms.