LYCOS RETRIEVER 
Tinnitus: Cases
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Masking devices resemble hearing devices and are designed to produce low-level sound that can reduce and in some cases eliminate the perception of tinnitus. Masking can ... produce the phenomenon of residual inhibition, where the reduction or elimination of tinnitus perception continues for a short time after the masker is removed.
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In some very severe cases, objective tinnitus may be an early sign of increased pressure in the fluid that surrounds that brain and spinal cord (cerebrospinal fluid). A pulsating sound may result from a blocked artery, an aneurysm, a tumor in a blood vessel, or other blood vessel disorders.
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Most cases of tinnitus are probably due to damage in the cochlea (organ of hearing) or auditory nerve pathology. Recent research suggests that some cases may occur at the auditory centers of the brain itself.
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Unfortunately, in many cases the cause of tinnitus cannot be identified, or medical or surgical treatment is not the appropriate course of action. In these cases, the tinnitus itself may need to be treated.
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There are many potential causes for tinnitus and it is likely that no one explanation will cover all cases. Nevertheless, the explanation below outlines one of the more commonly accepted theories for how tinnitus is caused.
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Constant, severe tinnitus is one of the most psychologically stressful conditions a person can suffer from. The effect of tinnitus on a person's life may include stress and anxiety, insomnia, reluctance to attend social events and go into noisy environments, reduced work performance, social isolation, depression and in severe cases even suicide.
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