Ear Infection and Hearing Loss

An ear infection may sometimes cause a temporary or reversible Reference hearing loss Opens New Window. This generally occurs because the infection blocks sound from passing through the ear canal or middle ear to the inner ear. When sound is blocked like this, it is known as conductive hearing loss. You may hear sounds as muffled or indistinct.

See a picture of the Reference ear Opens New Window Reference Opens New Window.

Types of infection that may cause temporary or reversible hearing loss include:

• Reference Inflammation Opens New Window or infection of the ear canal (Reference otitis externa Opens New Window). This condition is often referred to as "swimmer's ear," though too much water in the ear is not the only cause. Inflammation, swelling, or buildup (exudate) in the ear canal may block sound from moving to the middle ear. Hearing usually returns on its own after the infection goes away.
• Middle ear infection (Reference otitis media Opens New Window). Swelling and pus may block sound from moving to the inner ear. Hearing usually returns on its own after the infection goes away. Untreated middle ear infections may cause permanent damage to the structures of the middle ear that results in permanent hearing loss. But this is rare. Most ear infections get better on their own. And few ear infections cause permanent damage.
• Fluid in the space behind the eardrum (Reference otitis media with effusion Opens New Window). This may occur with or without infection. Fluid buildup may distort sound or block its passage to the inner ear. Fluid behind the eardrum usually clears on its own, although the eardrum may burst if the fluid in the middle ear becomes infected.
• Viral infection of the cochlea (the main sensory organ of hearing). This causes sudden hearing loss. The viruses that cause this type of hearing loss are thought to be the same ones that cause Reference upper respiratory infections Opens New Window such as Reference influenza Opens New Window or a cold. Hearing may not return, may partially return, or may completely return.

Ear infections often improve on their own with home treatment, but they sometimes require treatment with antibiotics.

Ear infections are most common in children, but they can occur at any age. This cause of hearing loss can almost always be found during a normal visit to your doctor.

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