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Superior Canal Dehiscence Syndrome (SCDS) is a rare medical condition that affects the inner ear. It is characterized by a series of symptoms that are caused by a thinning or complete absence of the part of the temporal bone overlying the superior semicircular canal of the vestibular system.

Symptoms

The symptoms of SCDS can vary greatly from person to person. They may include vertigo, dizziness, hearing loss, and tinnitus. Some people may also experience a feeling of fullness in the ear, nausea, and imbalance. These symptoms can be triggered by loud noises, changes in atmospheric pressure, or physical exertion.

Causes

The exact cause of SCDS is unknown. However, it is believed to be due to a defect in the bone that covers the superior semicircular canal. This defect can be congenital (present at birth) or it can develop later in life due to trauma or infection.

Diagnosis

Diagnosis of SCDS is often challenging due to the wide range of symptoms and their similarity to other conditions. It typically involves a thorough medical history, physical examination, and specialized tests such as Computed Tomography (CT) scans and Vestibular Evoked Myogenic Potentials (VEMP) testing.

Treatment

Treatment for SCDS can range from conservative management to surgical intervention. Conservative treatment options include lifestyle modifications, physical therapy, and medication. If these measures are not effective, surgery may be considered. The most common surgical procedure is called a canal plugging, which involves plugging the dehiscent canal to prevent the symptoms.

Prognosis

The prognosis for individuals with SCDS varies. Some people may experience a complete resolution of symptoms after treatment, while others may continue to experience symptoms. Long-term follow-up is often necessary to monitor for any changes in symptoms or complications.

See Also

• Inner ear
• Vertigo
• Tinnitus
• Hearing loss

References

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