What causes tinnitus?
Tinnitus can arise in any of the following areas:
the outer ear, the middle ear, the inner ear, or by abnormalities in the brain. Some tinnitus or
head noise is normal. If one goes into a sound proof booth and
normal outside noise is diminished, one becomes aware of these normal sounds. We
are usually not aware of these normal body sounds, because outside noise masks
them. Anything, such as ear wax or a
foreign body in the external ear, that blocks
these background sounds will cause us to be more aware of our own head sounds.
Fluid, infection, or disease of the middle ear bones or ear drum (tympanic membrane) can
also cause
tinnitus.
One of the most common causes of tinnitus is damage to
the microscopic endings of the hearing nerve in the inner ear. Advancing age is
generally
accompanied by a certain amount of hearing nerve impairment, and
consequently chronic tinnitus.
Today,
loud noise exposure is a very common
cause of
tinnitus, and it often damages hearing as well.
Unfortunately, many
people are unconcerned about the harmful effects of excessively
loud
noise, firearms, and high intensity music.
Some medications
(for example,
aspirin)
and other diseases of the inner ear (Meniere's syndrome)
can cause tinnitus. Tinnitus can in very rare situations be a symptom of such
serious problems as a brain aneurysm or a brain tumor (acoustic
tumor).