Hearing loss is one of the health problems are generally caused by age or because of frequent exposure to loud sound/loud. Hearing impaired might say if the voice signal failed to reach the brain.
Auditory processing occurs when the eardrum vibrates due to sound waves coming into rut. The vibrations then continue into the middle ear through the three bones of the hearing, which was known as osikel (consisting of the Malleus, incus, stapes). Osikel will strengthen the vibration to be continued towards the fine hairs in the cochlea, where the cochlea is finally sending signals via the auditory nerve to the brain.
Voices that have noise levels up to 79 decibels could still be categorized is safe for the human ear. According to WHO, until the year 2015, about 360 million people worldwide suffer from hearing loss. Meanwhile, there are approximately 1.1 billion people in the world are at risk of suffering from hearing loss due to the way the use of a music player that harm hearing.
Symptoms Of Hearing Loss
Early signs of hearing loss are:
- Avoid some social situations.
- Always exhausted or stressed, as should concentrate while listening.
- Withdraw from the talks.
- Hard of hearing a ringing telephone or doorbell.
- Asking others to repeat the word.
- The difficulty of listening to other people's words clearly, especially when discussing with-many people or in the crowd.
- The difficulty of determining the direction of the sound source.
- Listening to music or watching television with the volume louder than others.
- The difficulty of listening to a consonant
Some symptoms of hearing loss in infants and children is:
- Pay attention to the others to emulate something that was ordered, because he did not hear something instructed.
- Often talk aloud or set the TV volume loud.
- Can not mention one word when he was one year old.
- Be aware of the presence of someone when he saw it, however dismissive when called his name.
- Slow when learning to talk or not clear when speaking.
- The answer does not correspond to the question.
- For babies under 4 months, not turned toward the sound source.
- Not surprised when heard a loud sound.
Causes Of Hearing Loss
The two main causes of hearing loss are the age factor and a loud voice. Most people start a little annoyed hearing when entering the age of 40. Age-induced hearing loss is also known by the name presbikusis.
If distinguished from the parts of the ear that is compromised, there are two types of hearing loss, i.e. sensorineural hearing loss and conductive hearing loss.
Sensorineural hearing loss caused by damage to the sensitive hair cells are there in the inner ear or auditory nerve damage. Some causes of sensorineural hearing loss are:
- Suffered from meniere's disease, acoustic neuroma, meningitis, encephalitis, or multiple sclerosis.
- There are certain hereditary factors.
- Head injury unit.
- Condition of Autoimmunity.
- Abnormalities of the ear.
- Certain antibiotics-drugs.
- Radiotherapy for cancer of the nose.
- Viral infections in the inner ear or in the auditory nerve.
Whereas the conductive hearing loss usually occurs when sound waves cannot enter into the inner ear. The following are the causes of conductive hearing loss:
- Ruptured or perforated eardrum.
- Swelling of the walls or dysfunction in the channel or the eustachian tuba.
- Damage to the auditory bones due to trauma.
- Abnormalities of the ear.
- The entry of foreign objects into the ear.
The Treatment Of Hearing Loss
How the treatment depends on the cause and severity of hearing loss. However, hearing loss sufferers usually dealt with some of the actions and the following tools:
- Cochlear implants, hearing aids are implanted under the skin behind the ear.
- Clean up the dirt that clogs the ear.
- Auditory Brainstem Implants. Hearing aids that converts sound into electrical signals caught and pass it into the brain of sufferers.
- Hearing aids, can help sufferers by making the sound becomes more powerful and easily heard by the sufferer.
- Surgery. This step may be done if sufferers experience recurrent ear infections or injuries.
- Learn sign language and lip reading. Severe hearing loss sufferers will be encouraged to learn to understand the sign language and lip reading to ease communication with others.
Prevention Of Hearing Loss
There are several things that can be done to reduce the risk of hearing loss are:
- Do not insert objects into the ears of children, including the fingers, the broken sticks (cotton bud), cotton, and paper towels.
- Test your sense of hearing periodically if it is often exposed to loud sound while working.
- Avoid risky activities that harm the sense of hearing like hunting with a rifle, listening to music
- Protect your ears in a noisy environment.
- Use headphones that can withstand an influx of outside voices, so that the volume does not need to be too big.
- Immediately to the doctor when you experience the symptoms of ear infections or meniere's disease (ear ringing) so that the disease does not develop into a loss of hearing.