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Hyperacusis


Hyperacusis is a disorder in loudness perception. Patients suffering from hyperacusis may appear overly sensitive to a range of sounds, finding many noises unbearable and painfully loud. Hyperacusis is not the same as “recruitment,” a disorder that can be a normal consequence of hearing loss and is associated with abnormal perception of sound as the volume increases.

The condition can affect children and adults, but is considered rare, occurring in an estimated 1 in 50,000 people. It can be caused by a number of factors. The most common is related to damage to the cochlea from exposure to loud noises such as those experienced at certain work environments, rock concerts, gunfire, air bag deployment in cars and fireworks.

The hallmark symptom of hyperacusis is having a reduced tolerance and increased sensitivity to everyday sounds in your normal environment. People who suffer from the disease often complain of living in a world in which the volume seems to be turned up too high. Because of this, their quality of life is affected, and they may begin to wear earplugs or earmuffs in public situations where they cannot control the noise.

For people with hyperacusis, the everyday, normal sounds that most people hardly notice suddenly become irritating and painful. Often the most disturbing sounds are sudden, high-pitched noises such as alarms, bus brakes, the clanging of silverware and dishes, children’s screams and clapping.

Although a corrective surgical or medical approach for treating hyperacusis is not available at this time, there are a number of existing therapies that can help reduce a person’s fears and anxieties about the disease, as well as their actual sensitivity to sounds. These may include retraining and acoustic therapies.


Retraining Therapy

Retraining therapy consists of counseling and acoustic therapy. The aim is to reduce a patient’s reactions to hyperacusis. Counseling is designed to help a patient better cope, while acoustic therapy is used to decrease a patient’s sensitivity to sounds and to teach them to view sound in a positive manner.

Sound Generators

This treatment approach uses the sound of music or noise produced via a body-worn system or a small device that looks like a hearing aid, which produces steady, gentle sounds. The theory is that by listening to a sound at a low level for a certain amount of time each day, the auditory nerves and brain centers will become desensitized and able to tolerate normal environmental sounds again. In most cases, the treatment is successful, but takes anywhere from three months to two years for improvements to be made.
It is important to note also that the constant use of earplugs is NOT recommended. Constant or frequent blocking of the ears may further alter the brain’s calibration of loudness and may teach the brain to further restrict its comfort range.


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