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Tinnitus (ringing, buzzing or hissing in the ears) that occurs for only a short time after exposure to high noise levels is an early warning sign that your hearing is at risk and you may have suffered some permanent loss of hearing acuity.
Nearly 12 million Americans suffer from tinnitus, ringing in the ears that can stop and start or continue non-stop. In addition to ringing the sound can resemble a roar, squeal, whine, buzz, click, hiss, or hum and can affect one ear or both.