What To Know About Third Mobile Window Syndrome

Posted on by Advanced ENT & Allergy

Third Mobile Window Syndrome (TMWS) is a rare condition defined by extra openings in the bony labyrinth of the inner ear. These openings can disrupt the normal processes within the ear, leading to symptoms such as vertigo, ear pressure, disrupted auditory perception, hearing loss, unusual sensitivity to noise or ringing in the ears.

How Does Third Mobile Window Syndrome Occur?

Woman and her doctor talking about hearing problems.

The inner ear has two main windows: an upper opening called the oval window and a lower opening called the round window. TMWS commonly arises due to a condition called Superior Canal Dehiscence Syndrome (SCDS).

In SCDS, the bone covering the superior semicircular canal of the inner ear is either absent or thinned, creating a third window that disrupts the ear’s regular functioning. While the exact cause of SCDS is unknown, factors such as genetics, bone trauma, infections and aging may contribute.

How Is Third Mobile Window Syndrome Diagnosed and Treated?

TMWS shares symptoms with many other auditory and vestibular symptoms, including hearing loss and vertigo. If you are experiencing symptoms of TMWS, it’s important not to panic. Instead, schedule an appointment with your audiologist or ENT specialist for a hearing test and ear exam. They may recommend seeing a neurologist for a CT scan to get a detailed view of your inner ear.

If you are diagnosed with TMWS, and your symptoms are fairly mild, you may be able to manage them by avoiding vertigo triggers like sports in Freedom Park, staying away from loud environments and using ear tubes to relieve pressure. If symptoms become unmanageable, your audiologist might suggest surgery to close the abnormal opening. During this procedure, the surgeon will access the ear canal either from behind the ear or via a part of the skull called the middle cranial fossa and insert a plug in the hole to stop abnormal fluid movement and alleviate hearing and balance issues.

TMWS is extremely rare and can be daunting, but with our support, you can take the first step towards diagnosis and treatment. Contact Advanced ENT & Allergy today to schedule an appointment with one of our specialists.