Hearing loss can happen because a person was born with part of the ear that didn’t form correctly and don’t work well. Other problem may be caused by injury or illness. Here are causes of hearing loss based on its types.
1. Conductive Hearing Loss
Conductive hearing losses result from physical problems with the movement of the sound wave through the ear. A simple example is blockage of the ear canal.
Obstructed external ear canal
Cerumen (wax) build-up, hematoma (blood collection), or foreign body in the ear canal. This is one of the most common causes of hearing loss and the easiest to fix.
Perforated tympanic membrane
Caused by direct trauma such as a finger or cotton swab, middle-ear infections (otitis media), or explosions (blast injury)
Dislocated ossicle (malleus, incus, or stapes)
Usually from trauma to the hear
2. Sensorineural Hearing Loss
Sensorineural causes are from damage to their hair cells or nerves that sense sound waves.
Prolonged exposure to loud noises causes the hair cells on the cochlea to become less sensitive.
Barotrauma is discomfort and possible damage in the ear due to pressure differences between the inside and outside of the eardrum.
A fracture of the temporal bone can disrupt the nerves of the auditory system
Certain drugs can affect hearing by damaging the nerves involved in hearing. Usually this occurs when large or toxic doses are used but may also occur with lower doses. Such as: antibiotics, diuretics, salicylates, and antineoplastic.
This also can be called as problems with blood vessels, include sickle cell disease, diabetes, leukemia, polycythemia, and diseases in which excessive blood clotting occurs.
Children and adults with kidney problems
They are more susceptible to sensorineural hearing loss.
A disease that affects hearing and balance. It is usually associated with tinnitus (ringing in the ears). It has a gradual onset and often progresses to deafness and severe vertigo. The cause is unknown.
This type can be also caused by both of sensorineural and conductive hearing loss causes.