Each part of the ear has an important role in providing sound information to the brain. Hearing loss is caused by damage to one or more parts of the outer, middle or inner ear. In order to understand the hearing loss well, we need to understand the anatomy of the ear and the way of hearing. An overview of it will be described in the following explanation.
Hearing loss should always be diagnosed by a hearing doctor, such as an audiologist or an ENT specialist. They will test hearing to determine the type and extent of the damage. An audiogram, will illustrate the findings of the auditory test.
There are four types of hearing loss:
The first and most common type of sensorineural hearing loss is caused by the loss or destruction of nerve cells (hair cells) in the cochlea. Conductive hearing loss indicates a problem in the outer or middle ear that causes no sound to sound properly to the inner ear. Mixed hearing loss is a combination of sensorineural and conductive hearing loss. Finally, neurological hearing loss occurs when the auditory nerve can not send signals to the brain.
Here are the types of hearing loss and how to prevent it:
- Deaf from birth (Kongenital)
Deafness occurs in an infant, caused by factors that affect pregnancy or at birth. Congenital deafness can be prevented by not taking any medication during pregnancy and control of pregnancy on a regular basis.
Serum is ear wax. This can be prevented by not scratching the ear and detecting it early in primary school children or equivalent if it has a clogged ear tendency.
- Chronic Suppurative Otitis Media (OMSK) or congek
Occurs due to chronic middle ear infection, so the eardrum is torn and fluid out. Prevention, immediately to the doctor if you have a cough or runny nose and keep clean, and improve nutrition.
- Hearing loss due to noise
Hearing loss due to exposure to continuous noise for a long time. Prevention by avoiding a noisy environment, using ear protection, reducing the noisy contact time. If using an iPod or walkman, limit the volume 50-60 percent, and do periodic audiometry checks.
Nerve deafness in the elderly due to organ hearing degeneration process occurs gradually and symmetrically. Risk factors include the aging process, systemic disease (diabetes mellitus, hypertension, high cholesterol), history of exposure to noise, side effects of drug use, and lifestyle (drinkers of alcohol and smokers).