Ear is one of our five senses in the body, which is responsible for receiving sound waves. There are three major parts in an ear viz. The outer, middle and inner ear and every one of these parts play an important role for the functioning of the ear. If any major part of the ear is damaged, this can cause ear problems and also hearing loss, a partial or total inability to determine sound waves. Hearing loss can be temporary or permanent. However medications and surgical methods can treat temporary hearing loss but permanent hearing loss cannot be treated. So, what are the causes of permanent hearing loss?
There are 3 types of hearing loss, conductive, sensorineural and mixed. Conductive hearing loss can be caused by either in the middle ear or the outer year, where sound cannot be transmitted into the inner ear and a person suffering from this are unable to understand the sound/voices. On the other hand, sensorineural hearing loss happen when the nerve damage in the inner year, therefore the signal cannot be transmitted to the brain. In the mixed type, a person will have the both conductive and sensorineural that are causing hearing loss.
Permanent hearing loss can be gradual due to old age or sudden hearing loss, which is usually caused by viral infection. Sensorineural disorder often results in permanent hearing loss, however conductive hearing loss can be temporary or permanent. Exposure to loud noises that are higher than 90 decibels can cause permanent hearing loss because the loud noise could damage the nerves in the ear that works by transmitting signal to the brain. The hearing loss due to exposure to loud noises is also known as noise induced hearing loss or NIHL.
If you have receives a hard knock to your ear or the part of your head that is closed to your ear, you may experience a permanent hearing loss. Thomas Edison, the famous American inventor who invented the light bulb suffers from permanent hearing loss because he was slapped very hard when he was young.
Bacterial infections can affects the nerves in the ear, bacteria infection like meningitis will affect the nerves in the ear and more often than not damaging it. A non cancerous tumor that affects auditory system, acoustic neuroma is known to cause a permanent hearing loss to human.
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