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Tullio phenomenon in superior semicircular canal dehiscence (SSCD)
  1. Richard Pullicino,
  2. Reuben Grech
  1. Medical Imaging Department, Mater Dei Hospital, Msida, Malta
  1. Correspondence to Dr Richard Pullicino, richard.pullicino{at}

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A 68-year-old woman presented with worsening sound-induced vertigo (Tullio phenomenon) and left-sided hearing loss. Weber's test lateralised to the affected ear and audiography confirmed mild conductive hearing loss. Neurological assessment was remarkable for torsional/vertical noise and vibration-induced nystagmus. The patient demonstrated low threshold cervical vestibular-evoked myogenic potential responses, and superior semicircular canal dehiscence was suspected. Otoscopy, tympanography and stapedial reflexes were normal bilaterally.

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