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Thursday, May 14, 2009

Tinnitus Symptoms

By Matt Hellstrom

Have you ever heard a noise that seems to come from the inside of your head? If so, you have experienced tinnitus symptoms. At some point in your life you have undoubtedly experienced temporary tinnitus. It should be pointed out that tinnitus is not a medical condition; it is a symptom of an underlying medical condition. Tinnitus symptoms are acute or chronic and can be minor or major in the impact on the individual. There are 3 main causes for tinnitus including hearing loss, medication or loud noises.

Hearing Loss: Damage to the cochlea caused by aging, trauma or certain drugs can result in tinnitus symptoms. The theory for why this happens is based on how the brain handles the eye's blind spot. With the eye, the brain fills in the blind spot in our vision field to make it the same as the surrounding color field. It is theorized cochlea damage produces gaps in normal signaling which the brain fills in, creating tinnitus symptoms.

The most frequently reported tinnitus symptom is a ringing in the ears. This is usually caused by loud noise, either over a prolonged period of time (e.g., factory workplace), a short period of time (e.g., rock concert) or instantaneously (e.g., explosion). If you have walked out of action movie where the theatre had the volume cranked and normal sounds seemed muffled and there was a ringing sound, you have experienced acute tinnitus. This symptom is an indication you should change or avoid such environments, as prolonged exposure will result in permanent hearing loss.

Commonly used medicines that cause tinnitus symptoms include aspirin and quinine. Overuse of these medications can contribute to problems associated with auditory function. In addition, the aminoglycoside antibotic is known to cause tinnitus symptoms.

Tinnitus symptoms that are reported by some sufferers in addition to ringing are buzzing, a high pitched humming, roaring or whooshing, hissing, clicking, whistling and sounds like waves crashing.

Clicking sounds heard in the inner ear can be auditory signals that reach the inner ear through skeletal conduction. This sound is usually found to be caused by a misaligned jaw bone, but can also be caused by spasms of the muscles of the ear or throat. Tinnitus symptoms that involve the whoosh of blood being pumped through the vessels of the ear are know as pulsatile (as in pulse) tinnitus. Common causes of pulsatile tinnitus symptoms are high blood pressure, anemia or an overactive thyroid.

In rare cases tinnitus symptoms are caused by tumors. A tumor that presses on the ear's blood vessels will cause pulsatile tinnitus. A tumor on the nerve that carries the signals from the ear to the brain's acoustic processing center creates a condition known as acoustic neuroma. Unlike common tinnitus, this condition occurs in only one ear. For this reason single ear tinnitus should be investigated immediately. - 17269

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