Deafness, hearing loss is also called to recognize by impairing the ability of the ears and other parts and to identify sounds, defined. This can happen suddenly or gradually.

Hearing loss is common in older people, but it can happen to anyone, regardless of race, age or gender. It can vary from mild to severe hearing loss may temporarily or permanently or temporarily.

There are many causes of hearing loss, each has different symptoms. It all depends, what type affected and which part or parts of the auditory system.

1) The Chief Hearing Loss

Type of hearing loss than deafness. Normally, when a voice is usually the outer ear (or the outer ear or middle ear). However, this is a mild form of deafness of the inner ear can be compensated for losses. With this type with no obvious problems at the hearing, unless the sound loud and clear enough to be heard.

Hearing loss can be caused by a blockage in the ear canal, hearing abnormalities in the bones, eardrum and the upper opening of the Canal's syndrome.

2) Inner ear hearing loss

Another type of hearing loss is called sensorineural hearing loss. In contrast to the kind of behavior that the part of the inner ear, affecting especially shellfish. In mussels, we Corti hair cells of the body. Irregularities in the hair cells can result in hearing loss.

Another reason, so widespread is the perception of auditory nerve. The eighth cranial nerve, also known as vestibulocochular nerves receive and interpret sounds. Rarely, the nerve is damaged, leading to hearing loss.

Relationship to the severity perception can be classified as mild, moderate or severe. In most cases, it can be severe to the point where decomposition can lead to deafness.

3) The ambient noise

Noise is a major cause of hearing loss and is known as loss of hearing caused by noise. He noted that prolonged exposure to loud noise can damage hearing person. In fact, some studies have shown that people who live near highways and airports rather the ability to listen to the people.

Multimedia devices such as MP3 players are also known to cause damage to your hearing the noise. This is because the helmet closer to your ears than regular speakers. If these devices are exposed over long periods, it is a good chance of hearing loss occur.

4) Genetic diversity

Some people may not be aware of genetic deafness, what it means to be hereditary. This disease is caused by descendants of the dominant or recessive transmitted, General, if the gene is dominant, deafness, which could result in at least one family member from each tribe. If it is a recessive gene, it can skip generations, but surely the risk of infection is still there.

Hearing loss is genetically determined by, is generally known, when the baby is born. Type of congenital hearing loss is known as Connex 26 deafness. Other common but preaching is caused by the dominant gene, and Waardenburg syndrome gusher syndrome. Hearing by a recessive gene for Usher syndrome, Pendred syndrome.

5) disease

It is also possible that there may be individual to the situation. He pointed out that measles can the auditory nerve that can cause hearing damage. May be other diseases that cause meningitis, hearing that, like measles, can also cause damage to the auditory nerve.

Immune system disorders are also candidates. These diseases are HIV and AIDS.

6) drug

Some medicines can cause permanent hearing damage. This is called ototoxicity. Most of the group are known aminoglycosides such as gentamicin.

There may however lead to other drugs, the temporary hearing loss. These include non-steroidal anti-inflammatory drugs, diuretics, and even aspirin.

7) physical disabilities

Physical damage to the ear, especially if parts are damaged, they can cause. But not only the physical trauma of the ear, but also the whole head. If the head falls and is vestibulocochular system (auditory nerve) is damaged, the hearing before the door .