Patient Information
Superior Semicircular Canal Dehiscence (SSCD) is a condition where the bone covering one of the semicircular canals in the inner ear balance system is thin or completely open. This bone layer normally protects the inner ear from external factors. When this layer is thin or open, the inner ear responds excessively to sounds and pressure, which can lead to dizziness, imbalance and hearing-related complaints.
SSCD is a rare condition. It does not cause symptoms in everyone; in some people it can remain unnoticed for years.
What are the Symptoms of Superior Semicircular Canal Dehiscence (SSCD)?
The most common symptoms of SSCD are:
- Hearing one’s own voice, breathing or heartbeat too loudly (autophony)
- Dizziness or the sensation that the image is swaying triggered by loud sounds (Tullio phenomenon)
- Dizziness and imbalance
- Feeling of fullness or pressure in the ear
- Ringing in the ear (tinnitus)
- Feeling of reduced hearing in low tones
- Fatigue
What Causes Superior Semicircular Canal Dehiscence (SSCD)?
SSCD is usually due to congenital bone thinning. That is, a person may be born with it. In some people, symptoms may appear later with head trauma, prolonged straining, bearing down or increased intracranial pressure.
How is SSCD Diagnosed?
SSCD is diagnosed by an Ear, Nose and Throat specialist experienced in this field. The following tests are used for diagnosis:
- Hearing test (audiometry)
- Balance test (VEMP)
- High-resolution temporal bone computed tomography
These tests help distinguish SSCD from other inner and middle ear diseases that cause similar complaints.
How is Superior Semicircular Canal Dehiscence (SSCD) Treated?
SSCD treatment is planned according to the patient’s complaints:
- If there are no complaints, only follow-up is performed.
- If there are mild complaints, avoiding triggering situations may be sufficient.
- If complaints significantly affect daily life, the open area can be closed with surgical treatment and complaints can largely improve.
Who is Suitable for SSCD Surgery?
SSCD surgery is suitable for patients who experience excessive hearing of their own voice, sound-induced dizziness and severe imbalance, affecting daily life. Not every SSCD patient needs surgery.
In Summary
Superior Semicircular Canal Dehiscence (SSCD) is a rare inner ear disease, but when correctly diagnosed and treated in appropriate patients, satisfying results can be obtained. If you are experiencing these symptoms, I definitely recommend that you consult an Ear, Nose and Throat specialist experienced in this field.
