Does noise induced hearing loss get worse over time?

 

How to reduce noise-induced hearing loss

If the sound is loud enough and the duration of tolerating is long enough, however, but it may cause a long-lasting threshold shift. This situation is called noise-induced hearing loss, which truly has no cure and is irreversible. Noise-induced hearing loss (NIHL) is hearing impairment outcoming from exposure to loud sound. Many People may have a loss of approach to a narrow range of frequencies, impaired connective awareness of sound, or another impairment, accepting sensitivity to sound or ringing in the ears. Hearing can deteriorate gradually from constant and repeated noise exposure, like loud music or background sound, or all of sudden, from a less high-intensity sound such as a gunshot or airhorn. In both the types, loud voice overstimulates delicate hearing cells, leading to the long-lasting injury or death of the cells. If it once lost, then the hearing cannot be restored in humans as before.

When disclosure of hazards like noise take place at work and is associated with the hearing loss, then it is used to refer to as occupational hearing loss. There are a various variety of strategies available to avoid or reduce hearing loss. If not avoided, hearing loss can be managed through assistive devices and cognitive therapies. Prevention is the best protection against noise-induced hearing loss. The best and first option for preventing hearing loss is lowering the volume of sound at its source carefully. Then secondly, reducing the time of exposure to loud noise can reduce injury. At last Finally, the physical protection from the sounds can reduce its impact. Government adjustment has a design to limit occupational exposure to dangerously loud noise.

How can noise cause your hearing loss?

Today everyone is doing work and earning money but they do not have a time for their health. According to research work become a cause of hearing loss. So, I am writing this article to make people aware of the causes & solution of hearing loss. There are many type causes of hearing loss:

  • Age-related hearing loss.
  • Damage to the inner ear.
  • A gradual buildup of earwax.
  • Ear infection and abnormal bone growths or tumours.
  • Ruptured eardrum (tympanic membrane perforation).

Importance of Noise-Induced with Hearing loss:

The industrial and technological revolution may have driven society to higher levels from the lower levels of achievement, but this growth has also made the world a noisier place in which people have to live. In fact, noise pollution is an increasing health hazard and can be found easily almost everywhere. Rescuing to the country may not provide a quiet refuge, and even farmers are at high risk for a hazard to noise from their farm machinery.

Undesirable or unwanted noise is not the only harmful noises to which we have the exposure. The music at a show and the pounding of a jackhammer on the street can be an equal impairment to the inner ear. Loud noise delivered with equivalent intensity or over extended periods of time, regardless of their origin, are equally hazardous. Ultimately, continued or iterated exposures to high-intensity sound can cause acoustic trauma to the ear. This trauma can outcome in hearing loss, vibrating in the ears, and occasional dizziness (vertigo), as well as non-auditory effects. Like increases in heart rate and blood pressure.

Sign & Symptoms of NHIL

The symptom of noise-induced hearing loss is usually adversity hearing a conversation against a noisy background. The consequence of hearing loss on speech perception has two components. The very first component is the loss of audibility, which is something such as a decrease in overall volume. Most of the Modern hearing aids atone this loss with amplification. However, adversity in learning speech represents selective frequency loss for which hearing aids and amplification do not use to help. This is called by different names like “distortion,” “clarity loss,” and “Signal-to-Noise-Ratio (SNR)-loss”. Hearing loss can influence either one or both ears. When one ear is not working properly, it causes problems with directional hearing. Directional hearing offers the ability to analyze from which direction the sound came.

After the disclosure to noise, tinnitus, which is a vibrating or another noise in the ears, occurs commonly. The tinnitus is a sign that defines the inner ear damage or nerve destruction has occurred. Originally the tinnitus is temporary, lasting only for several hours or you can say volatile. As more cumulative hazard and damage occur, the tinnitus will be long-lasting until it eventually becomes permanent.  A Loud sound will also source some people to have anxiety and irritability. An increment in heart rate and blood pressure, or an expansion in stomach acid.

What causes Noise-Induced hearing loss:

  • Sound waves enter your narrow ear canal, which leads to the eardrum and you feel the motion.
  • Vibration passes through three connected bones malleus, incus, and stapes in the middle ear.
  • Sound vibrations from the air to fluid vibrations in the cochlea, traveling waveforms along the basilar membrane.
  • Hair cell sitting on top of the basilar membrane. It converts vibration into nerve impulses.
  • Nerve impulses are carried to the brain and auditory nerve carried this electrical signal to the brain. Converting it to what we hear as sound.

Most NIHL has some common cause i.e. by the damage and eventual death of these hair cells. The sound is measured by intensity and pitch. Both of them affect that which sound harm your hearing. NIHL caused by continuous loud sound over an extended period of time.

  • Intensity of sound
  • Frequency of sound
  • Duration
  • Occupational noise
  • Non-occupational noise

Prevention of noise-induced hearing loss:

It is usually permanent.  We can prevent NIHL through the use of simple, widely available, and economic tools. Shooting, hunting, playing in a band, using mp3 in high volume, concert sound and more activities that affect your NIHL. So protect ear in a loud environment. Avoid noise and practice good hearing life.

  • Avoid loud noise environment that damage ear.
  • Take a proper hearing test.
  • Use earplugs
  • Be alert to hazardous noises in the environment.
  • Protect your child from noise
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I hope this article will help you a lot!!! For more details check given links…..

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