Posterior Semicircular Canal Dehiscence Presenting with Recurrent Positional Vertigo

Vestibular symptoms to sound should arise suspicion for semicircular canal dehiscence (SCD) syndrome, especially when Tullio phenomenon or Hennebert's sign are present.But diverse clinical presentation makes this diagnosis not straightforward.Repeating episodes of positional vertigo in a patient with posterior semicircular canal dehiscence is herein presented case.Inconsistent history of patients with SCD makes this diagnosis challenging.BPPV has been described in various inner ear disorders but not yet in the SCD syndrome.