April 22, 2025

Learn how otosclerosis affects hearing and the treatment options available.

Hearing loss can be frustrating, especially when it happens gradually. You might notice that conversations sound muffled or you’re struggling to hear in crowded spaces. For some people, the culprit isn’t aging or loud noise exposure: it’s a condition called otosclerosis. This disorder affects the bones in the middle ear, leading to progressive hearing loss that can disrupt daily life.

Otosclerosis is a common cause of hearing loss, particularly in young adults. It can start with subtle changes, like difficulty hearing low-pitched sounds, and worsen over time. The good news is that it’s treatable, often with hearing aids or surgery. Read on to learn what otosclerosis is, what causes it, and how it can be managed to help restore hearing and improve the quality of life.

What is Otosclerosis?

Otosclerosis is a condition that affects the small bones in the middle ear. The stapes bone is known as one of the three tiny bones responsible for transmitting sound vibrations to the inner ear. In a healthy ear, the stapes moves freely, allowing sound to pass through efficiently.

In people with otosclerosis, abnormal bone growth develops around the stapes, restricting movement. Sound transmission is disrupted when the stapes is unable to vibrate properly, leading to hearing loss. This process often starts in one ear but can eventually affect both.

Otosclerosis is unique because it targets the bones rather than the eardrum or inner ear structures. As ‌bone growth worsens, the degree of hearing loss increases. It can cause significant hearing problems without treatment, but most cases respond well to medical or surgical treatment.

What Causes Otosclerosis?

The exact cause of otosclerosis isn’t fully understood, but several factors are known to increase the risk:

Genetic Factors

Otosclerosis often runs in families. If you have a parent or sibling with the condition, your chances of developing it are higher. Researchers have identified several gene mutations linked to otosclerosis, suggesting a strong hereditary component.

Hormonal Changes

Hormonal changes, particularly during pregnancy, have been linked to the onset or worsening of otosclerosis. Some women first notice hearing problems during or after pregnancy, which suggests that increased estrogen levels may contribute to abnormal bone growth in the ear.

Viral Infections

Certain viral infections, especially measles, have been linked to otosclerosis. The virus may trigger inflammation or immune responses, leading to bone growth around the stapes. Studies have found traces of the measles virus in the ear bones of some patients with otosclerosis.

Immune System Issues

Some research suggests that immune system dysfunction may play a role in otosclerosis. Autoimmune responses, where the body mistakenly attacks its tissues, could contribute to the abnormal bone growth in the middle ear.

Otosclerosis Symptoms

Otosclerosis can cause a wide range of symptoms that gradually become more noticeable over time:

• Gradual hearing loss: The most common symptom is progressive hearing loss, which usually starts with difficulty hearing low-pitched sounds like a person’s voice or background noise.
• Tinnitus: Many people with otosclerosis experience ringing or buzzing in the ears.
• Dizziness or balance issues: While otosclerosis mainly affects hearing, it can cause mild balance problems or vertigo.
• Difficulty hearing whispers or soft speech: High-frequency sounds can be more complex to hear, making it difficult to follow conversations.
• Sensitivity to loud sounds: People with otosclerosis may become more sensitive to loud noises or experience discomfort from sounds that others find normal.

Symptoms tend to worsen over time. If left untreated, otosclerosis can lead to severe hearing loss. However, early diagnosis and treatment can help preserve and even restore hearing.

How is Otosclerosis Diagnosed?

If you’ve noticed gradual hearing loss or ringing in your ears, an ENT specialist (ear, nose, and throat doctor) is the best person to help. Diagnosing otosclerosis requires specialized tests to confirm the cause and help determine the best treatment plan.

Hearing Test (Audiogram)

The first step in diagnosing otosclerosis is a hearing test, or audiogram. The doctor will measure your ability to hear different pitches and volumes during this test. People with otosclerosis often have trouble hearing low-pitched sounds, which will appear on the audiogram as a specific type of hearing loss called conductive hearing loss.

Tympanometry and Bone Conduction Tests

Tympanometry measures how well your eardrum and middle ear bones respond to sound. A bone conduction test measures how well sound waves pass through the bones in your skull. If you have otosclerosis, these tests will show that the stapes blocks sound rather than a problem with the inner ear or auditory nerve.

Imaging Tests

Sometimes, a CT scan or other imaging test may be used to get a clearer picture of the middle ear bones. This can help confirm abnormal bone growth around the stapes and rule out other conditions that might cause similar symptoms.

Ruling Out Other Causes

An ENT specialist will also consider other possible causes of hearing loss, such as ear infections, fluid buildup, or damage to the eardrum. If those issues are ruled out, and the hearing test patterns align with otosclerosis, a diagnosis is usually confirmed.

Otosclerosis Surgery and Treatment Options

Otosclerosis doesn’t always require surgery, but several treatment options can help improve hearing and reduce symptoms. The right approach depends on the severity of the condition and how much it’s affecting daily life.

Hearing Aids

Hearing aids are often the first step in managing mild to moderate otosclerosis. They work by amplifying sound, making it easier to hear even if the stapes bone is not vibrating correctly. Modern hearing aids are discreet and can be adjusted to match specific hearing loss patterns caused by otosclerosis.

Otosclerosis Surgery (Stapedectomy)

For more severe cases, surgery may be the best option. A stapedectomy is a procedure where the surgeon removes the stapes bone and replaces it with a tiny prosthetic device. This allows sound waves to bypass ‌the abnormal bone and reach the inner ear more efficiently.

• Most patients experience improved hearing within days to weeks after surgery.
• The procedure is done under local or general anesthesia and typically takes about an hour.
• Risks include dizziness, taste disturbances, and in rare cases, worsening of hearing loss. However, the success rate for stapedectomy is high.

Medications

While medications can’t cure otosclerosis, fluoride therapy may help slow its progression. Sodium fluoride is believed to strengthen the bone and prevent further abnormal growth. However, this treatment is not widely used and is generally reserved for early-stage cases.

Observation

Doctors may recommend monitoring the condition for mild cases before deciding on hearing aids or surgery. Regular hearing tests can track any changes in hearing, and treatment can be adjusted if symptoms worsen.

Recovery After Otosclerosis Surgery

Most patients recover quickly after a stapedectomy. The procedure is typically done on an outpatient basis, meaning you can go home the same day.

• Mild dizziness and unsteadiness are common in the first few days after surgery.
• Taste changes or a metallic taste in the mouth may occur temporarily due to the facial nerve's proximity to the middle ear.
• Most people notice an improvement in hearing within one to two weeks.

Follow-up appointments are essential to monitor healing and ensure the prosthesis functions properly. Your ENT specialist may adjust a hearing aid or recommend additional therapy based on your progress.

Can Otosclerosis Be Prevented?

Because otosclerosis has a genetic component, it can’t always be prevented. However, some steps may help reduce the risk of developing or worsening the condition:

• Early detection: Regular hearing tests can help identify issues early, allowing for quicker intervention.
• Protect your ears: Avoid prolonged exposure to loud noises, which can worsen existing hearing issues.
• Avoid ear infections: Repeated ear infections can contribute to middle ear damage, so treating them promptly is important.
• Healthy lifestyle: Maintaining overall health, including managing stress and staying physically active, can support better ear health.

Living with Otosclerosis

Hearing loss from otosclerosis can be frustrating, but most people can manage it effectively with the proper treatment. Hearing aids and surgical options can significantly improve hearing and quality of life.

Support options like hearing therapists and assistive listening devices can also make daily communication easier. Some patients find that captioning services, smartphone hearing apps, and specialized TV listening devices help them stay connected and engaged.

Adjusting to hearing loss takes time, but consistent treatment and support can make a big difference. Protecting your remaining hearing by avoiding loud noises and treating infections promptly can help preserve long-term hearing health.

FAQs About Otosclerosis

At what age does otosclerosis usually start?

Otosclerosis typically begins between 15 and 45, with most cases diagnosed in early adulthood.

Can otosclerosis cause complete deafness?

Severe hearing loss is possible, but complete deafness is rare. Hearing aids or surgery can manage most cases.

Is otosclerosis hereditary?

Yes, there’s a strong genetic component. If a parent or sibling has otosclerosis, it increases your chances of developing it.

How long does it take to recover from otosclerosis surgery?

Most people recover from a stapedectomy within one to two weeks. Improvement in hearing can continue for several months after the procedure.

Can otosclerosis go away on its own?

No, otosclerosis usually worsens over time without treatment. However, the progression may slow or stabilize at some point.

Can otosclerosis affect balance?

Yes, in some cases. The inner ear is involved in hearing and balance, so otosclerosis can sometimes cause dizziness or balance issues.

When to See an ENT Specialist

If you’re experiencing hearing loss, ringing in your ears, or balance problems, seeing an ENT specialist is important. Early diagnosis makes a big difference in managing otosclerosis and preventing further hearing loss.

An ENT specialist can evaluate your hearing with advanced tests and recommend the best treatment plan based on the severity of your condition. If hearing aids or surgery are needed, they’ll guide you through the process and help you understand your options.

You can use DocFinderPro to find a trusted ENT specialist near you and schedule a consultation. Early treatment can help preserve your hearing and improve your overall quality of life.

Get Back to Hearing Clearly

Otosclerosis can disrupt daily life, but you don’t have to live with hearing loss. With the correct diagnosis and treatment, most people experience meaningful improvement in their hearing. Whether hearing aids, surgery, or supportive therapies, options are available to help you hear more clearly and comfortably.

If gradual hearing loss has been creeping in and otosclerosis is on the radar, chat with us to find an otologist near you who can confirm the diagnosis and walk you through treatment, including stapedectomy.