Tullio phenomenon is an unusual response to a loud noise or changes in middle ear pressure.
Features of Tullio's phenomenon
(1) sudden onset of disequilbrium/vertigo or oscillopsia/nystagmus
(2) triggered by a loud sound or change in middle ear pressure (as during a Valsalva maneuver)
(3) exclusion of alternative explanations (seizures, spasms, etc)
It may be associated with:
(1) dehiscence of the of the superior semicircular canal
(2) osteoma of the middle ear
(3) congenital middle ear defects
(4) cochlear implantation
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Specialty: Neurology, Otolaryngology
ICD-10: ,
