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2. Mastoiditis Causes

The mastoid bone contains mastoid cells -- pockets of air similar to the structure of a honeycomb. When these cells become infected, mastoiditis develops. The condition often starts as an inner ear infection. However, a condition called cholesteatoma can also lead to mastoiditis. Cholesteatoma causes skin cells to build up abnormally inside the ear. When this happens, the ear cannot drain properly, leading to infection.

what causes Mastoiditis

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