How Is Tinnitus Evaluated?
A medical history, physical examination, and a series of special tests can help determine precisely where the tinnitus is originating. It is helpful for the doctor to know if the tinnitus is constant, intermittent, or pulsating (synchronous with the heartbeat, referred to as pulsatile tinnitus), or if it is associated with hearing loss or loss of balance (vertigo or vestibular balance disorders). All individuals with persisting unexplained tinnitus need a hearing test (audiogram). Patterns of hearing loss may lead the doctor to the diagnosis.
Other tests, such as the auditory brain stem response (ABR), a computerized test of the hearing nerves and brain pathways, computer tomography scan (CT scan), or magnetic resonance imaging (MRI scan) may be needed to rule out a tumor occurring on the hearing or balance nerve. These tumors are rare, but they can cause tinnitus.