Some of the
reasons that hearing loss often goes undetected are:
-
Gradual -
Hearing loss usually develops so
slowly that the person with the loss may not notice
any change. A loss of one decibel a year is not
noticeable, but after 15 or 20 years a very
significant loss can develop.
-
Partial -
In most cases of hearing loss, only
certain frequencies are affected. Hearing for low
pitch sound may still be too loud. The loss may
affect only high pitch sounds or the softer range of
sounds. As a result, the person still hears a great
deal of sound (and some sounds may actually be too
loud), but voices are unclear or distorted because
of the significant loss for high frequencies.
-
Painless -
There is usually no pain or feeling
associated with hearing loss. One exception is the
pain that can be associated with middle ear
infection, which is much more common in children
than adults. However, tinnitus -- a ringing,
buzzing or other noise in the ear -- is sometimes
related to hearing loss.
-
Invisible -
There are not physical signs of
hearing loss, and someone with a perfectly normal
appearing tympanic membrane can have a profound
cochlear hearing loss. The person with a hearing
problem doesn't look any different, of course, and
in most cases of adult hearing loss, the person's
voice is no different. And of course, it's not
possible to look into the inner ear or cochlea where
most hearing problems develop.
Thus, there are good reasons why the person with the
hearing loss is usually "the last person to know."
There are sound reasons for what might be called denial.
These
factors also explain why friends or family members
usually notice the hearing problems first. When family
and friends start having to repeat or someone talks
about possible hearing problems, it's time for an
audiological evaluation. It's always a good idea to get
specific information whenever someone questions their
hearing... and we've never heard someone complain if the
results of an audiological evaluation indicate normal
hearing. |