Thursday 27 February 2014

Hearing damage


Damage to the structures or nerve fibres of the ears and/or the brain caused, for example, by illness, physical trauma or natural aging, may result in hearing loss.  It is, therefore, important to be aware of the many different factors that can cause such damage.                                                                                                              
Here I have listed a few:
 - Illness such as measles and meningitis may cause damage to the auditory nerve or cochlea.
 - Chemicals  such as lead, some solvents and some asphyxiants, may damage the cochlea with        lesions.
 - Some medications, for example Aminoglycoside antibiotics and salicylates (aspirin), can cause      damage with prolonged use.
 - Trauma, including punctured ear drum from foreign objects, fractures of the temporal bone and knocks to the head, can cause temporary or permanent damage depending upon the severity.
 - A blockage or deformity in the middle ear can prevent the bones from vibrating properly.
However, noise is the cause of about half of all cases of hearing loss and noise damage in young people today is of particular concern.

How noise-induced hearing loss occurs:

Permanent damage to your hearing can happen very quickly with exposure to loud noises such as fire arms.
Any sounds above 90 decibels are extremely dangerous. So, sustained exposure to anything as loud as even a lawnmower could cause serious damage.
Listening to music on headphones can be very bad for your hearing. In fact, listening to loud music on headphone can be one of the quickest ways to cause serious, permanent damage.

How to avoid noise damage:

If the noise is above 85db make sure you turn it down or wear ear protectors.
If you go to concerts or nightclubs wear earplugs and don’t stand near to the speakers.
Lower the volume of your stereo/TV etc.

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