Most people with otosclerosis notice hearing problems in their 20s or 30s. One or both ears can be affected.
Symptoms of otosclerosis include:
The symptoms of otosclerosis can be hard to tell apart from other causes of hearing loss.
Otosclerosis can cause mild to severe hearing loss, but it very rarely causes total deafness.
Your hearing usually gets worse gradually over months or a few years, and may continue to get worse if ignored and left untreated.
But the hearing loss can normally be treated successfully with either hearing aids or surgery.
Hearing is improved or restored in around 80 to 90% of people who have surgery.
Very occasionally, otosclerosis can spread to the inner ear, resulting in a greater level of hearing loss that cannot be improved with surgery.
See a GP if you're worried about your hearing. They'll ask about your symptoms, examine your ears, take your medical history, and may do some simple hearing tests.
If they suspect a problem such as otosclerosis, you'll be referred to an ear, nose and throat (ENT) specialist or hearing specialist (an audiologist) at a nearby hospital.
The specialist will carry out some further hearing tests, and possibly a scan of your head, to help identify the problem.
Otosclerosis can usually be treated successfully with either a hearing aid or surgery.
If your hearing loss is very mild, you may not need any treatment at first.
A hearing aid is an electronic device that increases the volume of sound entering your ear so you can hear things more clearly.
The advantage of using a hearing aid is that, unlike surgery, it does not carry any risks.
Modern hearing aids are small and discreet, and some can be worn inside your ear so they're not obvious.
You can talk to an audiologist about the different types of hearing aid available and which may be best for you.
Surgery is an option if you'd prefer not to wear a hearing aid. The main operation used is called a stapedotomy or stapedectomy.
A cut is made inside your ear canal, or occasionally above or in front of your ear, to access the bones inside your ear.
Part of the stapes bone is removed and a plastic or metal implant is put into the ear to transmit sound from the remaining bones into the inner ear.
You'll be able to go home the same day or the day after.
This is a delicate operation that's usually very successful. But as with all operations, it carries a small risk of complications.
You can discuss the risks and benefits of both surgery and hearing aids with your surgeon to help you decide which you'd prefer.
The exact cause of otosclerosis is unclear and it's not known whether you can do anything to prevent it.
Many cases seem to run in families, and it's thought they may be the result of inheriting a faulty gene from a parent.
The condition can occasionally get worse more quickly during pregnancy, which may mean changes in hormone levels sometimes play a role.
Action on Hearing Loss: otosclerosis factsheet
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