Age-related hearing loss Health Article

Definition

Age-related hearing loss, or presbycusis, is the slow loss of hearing that occurs as people get older.

Alternative Names

Hearing loss - age related; Presbycusis

Causes, incidence, and risk factors

Tiny hairs inside your ear help you hear. They pick up sound waves and change them into the nerve signals that the brain interprets as sound. Hearing loss occurs when the tiny hairs inside the ear are damaged or die. The hair cells do not regrow, so most hearing loss is permanent.

There is no known single cause for age-related hearing loss. Most commonly, it is caused by changes in the inner ear that occur as you grow older. However, your genes and loud noises (such as from rock concerts or music headphones) may play a large role.

The following factors contribute to age-related hearing loss:

• Family history (age-related hearing loss tends to run in families)
• Repeated exposure to loud noises
• Smoking (smokers are more likely to have such hearing loss than nonsmokers)

Certain medical conditions and medications also contribute to age-related hearing loss. About half of all people over age 75 have some amount of age-related hearing loss.

Symptoms

The loss of hearing occurs slowly over time. It is most difficult to hear high-frequency sounds, such as someone talking. As hearing gets worse, it may become difficult to hear sounds at lower pitches.

Symptoms include:

• Certain sounds seem overly loud
• Difficulty hearing things in noisy areas
• High-pitched sounds such as "s" or "th" are hard to distinguish from one another
• Men's voices are easier to hear than womens.
• Other people's voices sound mumbled or slurred
• Ringing in the ears

The symptoms of presbycusis may resemble other conditions or medical problems. Talk to you health care provider if you have any of these symptoms.

Signs and tests

A complete physical exam is performed to rule out medical conditions that can cause hearing loss. The health care provider will use an instrument called an otoscope to look in your ears. Sometimes, wax can block the ear canals and cause hearing loss.

You may be sent to an ear, nose, and throat doctor and a hearing specialist (audiologist). Hearing tests can help determine the extent of hearing loss.