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February 3, 2012
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Labyrinthitis

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Labyrinthitis Overview

Labyrinthitis means an inflammation of the inner ear structure called the labyrinth. Sometimes the term labyrinthitis refers to other causes of inner ear problems that have no inflammation because those problems produce similar symptoms.

  • You have a labyrinth in each of your inner ears, encased in thick bone near the base of your skull. As the name implies, the labyrinth is a maze of interconnected fluid-filled channels and canals. Half of the labyrinth, the cochlea, is shaped like a snail's shell. It sends information about sounds to the brain. The other half looks something like a gyroscope with 3 semicircular canals connected to an open cavern or vestibule. The vestibule portion of the labyrinth sends information to the brain regarding the position and movement of your head. Any disturbance of the vestibule can lead to faulty information going to your brain.

  • Your eyes also send positioning information to your brain. When information from the labyrinth and the eyes don't match, the brain has trouble interpreting what is happening. This misinterpreting often leads to a sensation that you are spinning (vertigo) or a feeling that you are moving when in fact you are remaining still. Feelings of motion sickness (nausea and vomiting) often follow. Sometimes you will experience hearing loss or abnormal sounds such as a high- or low-pitched ringing (tinnitus).
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Labyrinthitis

Topic Overview

What is labyrinthitis?

Labyrinthitis (say “lab-uh-rin-THY-tus”) is a problem deep inside the inner ear. It happens when the labyrinth, a part of the inner ear that helps control your balance, gets swollen and inflamed.

The inflammation may cause sudden vertigo. This makes you feel like you're spinning or whirling. Labyrinthitis may also cause temporary hearing loss or a ringing sound in your ears.

Your doctor may also call this vestibular neuritis. The two problems have the same symptoms and are treated the same way.

See pictures of the labyrinth and the vestibular nerve.

What causes labyrinthitis?

The cause of labyrinthitis is not clear. Labyrinthitis can happen after a viral infection or, more rarely, after an infection caused by bacteria. It is often triggered by an upper respiratory infection, such as the flu or a cold. Less often, it may start after a middle ear infection.

The infection inflames the vestib...

Read the Labyrinthitis and Vestibular Neuritis article »


Read What Your Physician is Reading on Medscape

Labyrinthitis and Related Conditions »

Labyrinthitis is an inflammatory disorder of the inner ear or labyrinth.

Read More on Medscape Reference »

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