Otosclerosis
Your bones are constantly remodeling themselves, including the bones in your middle ear. But when that remodeling goes awry, the bones in your ear become overly stiff and no longer conduct sound properly. More than three million people the U.S. have otosclerosis, a hardening of the bones of the middle ear, and it is most common in middle-aged women. It typically starts in one ear and moves to the other. Some people also experience ringing, roaring, buzzing, or hissing in the affected ear.
