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Occupational deafness

Working in high noise environment for a long time, the nerve cells in inner ear will be gradually destroyed. The higher the noise dose is, the greater the degree of damage will be. Once the inner ear nerve cells are damaged, they cannot regenerate, and the hearing will be permanently damaged. Therefore, occupational deafness is incurable, and prevention is the only way to protect the hearing of workers in noisy environment.

Hearing loss

Early signs

Unlike the sudden deafness caused by industrial injury or other accidents, the hearing loss is gradually formed and deepened. If some of the following signs of hearing loss are found, attention should be paid to:

 persistent or intermittent buzzing in the ear (commonly known as “tinnitus”) causes trouble

 hearing loss, difficulty in talking to people or on the phone

 need to turn up the volume of radio or TV

 difficulty concentrating


Health effects: tinnitus, temporary deafness and permanent deafness

Temporary deafness: when exposed to high noise for a short time, the sensitivity of hearing will be reduced, the sense of external sound will be blurred, and tinnitus will appear. After leaving the noise environment, the hearing will slowly recover.

Permanent deafness: after long-term exposure to high noise, the auditory nerve cells in the inner ear cannot be recovered due to continuous damage, and the hearing gradually decreases, which may eventually lead to hearing loss. Occupational deafness is permanent deafness. Dizziness, headache, insomnia, tiredness, irritability and psychological pressure affect the heart rate and blood pressure, resulting in anorexia and dyspepsia.

Link:Occupational deafness and hearing impairment

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