People with tinnitus often show some loss of hearing on hearing tests. The pattern is typically shaped like a roller coaster hill with a notch in the track. This can be an indicator of damage in the hairlike cells of the cochlea (or another part of the auditory system). The auditory system can become hypersensitive to certain sounds. This causes the tinnitus sufferer to flee situations that cause the tinnitus to get louder and more annoying.
It is just as likely that someone with tinnitus will not show any hearing loss, especially if the tinnitus is a result of a traumatic brain injury, tumor, or neck injury. If the cochlear cells are intact then there may be no discernible loss of hearing that shows up on a hearing test. That does not mean that the damage does not exist. The tinnitus sufferer is hearing well and in addition to hearing well he or she also hears high-pitched ringing, clicking, or hissing. Somewhere in the auditory system there is damage. That is the case for many tinnitus sufferers.
Hearing test results are not the determining factor as to whether someone has tinnitus.
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