Ear problems
The middle ear is separated from the outer ear by the eardrum, and contains tiny bones that amplify sound waves. Otosclerosis is characterized by the abnormal formation of bone within the middle ear that stops these tiny bones from vibrating. This causes a conductive hearing loss, because the sound waves can't reach the inner ear. The sense of balance may also be impaired if the abnormal bone growth extends into the inner ear. Women aged between 15 and 30 years are most commonly affected by otosclerosis. The cause is unknown, but risk factors include family history and pregnancy. Treatment options include surgery or the use of hearing aids.
Symptoms
The symptoms of otosclerosis include:
- Gradual but progressive loss of hearing
- Hearing may improve in noisy conditions
- Sensations of ringing in the ears
- Dizziness.
