When the mobility of the eardrum is inadequate, hearing loss may occur, usually temporarily.
Thanks to the vibration of the eardrum, the sounds are transmitted to three small bones located in the cavity of the middle ear. These ossicles then carry the sounds to the inner ear, where they are processed: this is what allows us to hear.
While affected by otitis, the cavity of the middle ear is filled with fluid. The eardrum therefore cannot vibrate adequately, and mild hearing loss may ensue.
For more information on ear infections, see the section on this subject further down the page.