Hearing loss is a common problem in older adults. By age
65, 1 person in 3 has some hearing loss. By age 75, it's
nearly 1 person in 2. People who don't hear properly
sometimes give odd answers to questions and are wrongly
thought to be confused or uncooperative. People with
hearing problems can get so frustrated that they stop trying
to communicate and become withdrawn. It is important to get
hearing problems diagnosed and treated so that older adults
can enjoy and participate fully in life.
What causes hearing loss?
There are different causes and types of hearing loss. Four
main types of hearing loss are:
- presbycusis
- conductive deafness
- central deafness
- otosclerosis,
Presbycusis (progressive loss of hearing)
Presbycusis, or sensorineural hearing loss, is a gradual
decline in sound reception that occurs as you get older.
This happens because the eardrum loses some elasticity and
the bones of the ear become stiffer. Sounds, particularly
higher tones, are muffled. Words are hard to understand if
there is a lot of background noise. At the same time, loud
noise may be painful so when people raise their voice in an
effort to be heard, they may seem to be shouting to the
person who is hard of hearing. People with presbycusis
should ask others to speak slowly and clearly. Hearing aids
can be very helpful.
Conductive deafness
Conductive deafness happens when sound waves are blocked as
they pass through the ear. People with conductive deafness
hear sounds from outside as muffled, but their own voice may
seem louder than normal. Because of this, they often speak
softly. The most common cause of conductive deafness is ear
wax. Removal of the wax, after first softening it, will
make a lot of difference. Other causes of conductive
deafness are ear infections, a tear or hole in the eardrum,
and damage to the small bones in the inner ear that conduct
sound waves.
Central deafness
Central deafness is far less common than either presbycusis
or conductive deafness. Central deafness is due to a
problem in the hearing centers in the brain. Sounds can be
heard, but language cannot be understood. Central deafness
may follow a long illness with high fever, long exposure to
loud noise, head injuries, stroke, tumors, and certain
drugs. The deafness is permanent, but speech therapy may
help communication.
Otosclerosis
Otosclerosis is a disorder of the bone around the inner ear.
Another term for this disorder is otospongiosis, which means
spongy bone. This disorder often occurs in the bones
between the middle and the inner ear. Many people are
unaware they have otosclerosis. When it affects the inner
ear, deafness and dizziness may result. One or both ears
may be affected. It is almost always accompanied by ringing
in the ear, which is called tinnitus. Unlike some causes of
hearing loss, a hearing loss caused by otosclerosis can be
treated. Treatment includes surgery to stabilize or replace
the small bones of the inner ear. Surgery can usually return
hearing to a normal or near normal status. If surgery is
not possible, a hearing aid may be helpful.
What should I do if I think my hearing is getting worse?
If your hearing is getting worse, see your healthcare
provider. He or she will examine your ears and may
recommend that you see an audiologist (hearing specialist)
for special hearing tests. You may have earwax that needs
to be removed. A hearing aid may be recommended. Hearing
aids are devices that make sounds louder. Different hearing
problems may need different kinds of hearing aids.
If you have a hearing problem, tell people about it and ask
them to speak slowly and clearly. If you don't hear the
first time, ask people to repeat what they said a little
more loudly. Ask people to face you when they speak, and
watch their lips and body signs. When you are in a group or
audience, listening to a speaker, learn where to sit so that
you can hear best.
Don't try to hide your hearing problem. It is nothing to be
ashamed of and most hearing problems can be treated.
This content is reviewed periodically and is subject to
change as new health information becomes available. The
information is intended to inform and educate and is not a
replacement for medical evaluation, advice, diagnosis or
treatment by a healthcare professional.
Copyright © 2007 McKesson Corporation and/or one of its subsidiaries. All Rights Reserved.