Tinnitus is the medical name for the perception of noise in one
ear, both ears or the head. The noise comes from inside the body
rather than an outside source.  People with tinnitus can
experience different types of sound. Most people describe it as
a ringing sound but other sounds may include:    • buzzing   •
humming   • whistling   • music  Sometimes, the noise associated
with tinnitus beats in time with a person’s pulse. This is known
as pulsatile tinnitus.  Read more about the different sounds of
tinnitus.  Tinnitus is often worse at quiet times, such as when
you are trying to get to sleep. This is because there is less
background noise to distract you from the sounds of tinnitus.
The sound may also be more noticeable when you are tired.
Tinnitus is a symptom rather than a condition itself. The sounds
are usually only heard by the person who has tinnitus, although
in a few rare cases, they can also be heard by other people.
Temporary tinnitus can be caused by a cold, a blow to the head,
or prolonged ex