Many of the symptoms caused by Superior Canal Dehiscence Syndrome can be similar to those of other syndromes. As such, it is important to get a proper diagnosis from a specialist in order to rule out other possible causes.

A diagnosis usually involves having your family doctor/general practitioner refer you to an ENT (ear/nose/throat) doctor that specializes in Otology or Neurotology for a hearing assessment.

Typically, an ENT specialist will perform an audiogram hearing test and a VEMP test. If a dehiscence is suspected from the results, a CT scan may be required as well. 

SCDS Diagnostic Criteria

The proposed SCDS diagnostic criteria requires one of the following symptoms:

  • Auditory issues (hyperacusis or pulsatile tinnitus) caused by bone conduction
  • Vestibular issues (vertigo or oscillopsia) caused by noise or pressure

Plus one of the following medical tests indicating SCDS:

  • Uncontrollable eye movement caused by sound or pressure changes
  • An audiogram test showing negative bone conduction
  • A VEMP test indicating low cVEMP or high oVEMP results

And a high-resolution CT scan showing a dehiscence or thinning of the superior canal bone.

Next: Managing Symptoms