The Epic Interactive Encyclopedia 1997/The_Epic_Interactive_Encyclopedia_97.iso/t/tinnitus/infotext

Text File | 1992-09-02 | 627b | 16 lines

In medicine, constant internal sounds,
inaudible to others. The phenomenon may
originate from noisy conditions (drilling,
machinery, or loud music) or from infection
of the middle or inner ear. The victim may
become overwhelmed by the relentless noise in
the head. In some cases there is a hum at a
frequency of about 40 Hz, which resembles
that heard by people troubled by
environmental hum but may include whistles
and other noises resembling a machine
workshop. Being in a place where external
noises drown the internal ones gives some
relief, and devices may be worn that create
pleasant, soothing sounds to override them.