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Diagnosed with Acute right Mastoiditis, never completely got over it. Pain on left side due to middle ear infection. Causes ?

I was diagnosed with Acute right Mastoiditis in November of 2012. I have never completely gotton over this and now the pain is on my left side and pretty severe. They say it is caused by a middle ear infection , however Dr s have never found an infection and I have never ran a fever? I also have had 2 ct scans, one at the hospital where I was originally diagnosed. What could be causing this?
Asked On : Fri, 8 Mar 2013
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ENT Specialist 's  Response

Thank you for your query.

1. The mastoiditis is probably secondary to an Eustachian Tube Dysfunction (ETD).

2. The decreased ventilation may be causing a build-up of normal secretions in the mastoid air cells and middle ear. As the body absorbs the oxygen, there is a relative rise in the carbon dioxide levels in the middle ear and mastoid. This further increases the secretions, setting up a viscous cycle. These trapped secretions may get infected causing pain and pressure.

3. Since bone has a poor blood supply, controlling infection in the mastoid is difficult. Is your hearing normal?

4. Get a Tympanogram (Impedance Audiogram) done to check for ETD. Upload your CT Scan images, the ear examination findings and audiometry tests for further advice at

Answered: Thu, 8 Aug 2013
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