causes of hearing loss
Hearing loss in adults has many causes, such as disease or infection, ototoxic drugs, exposure to noise, tumours, trauma, and the
This is the most common cause of hearing loss that is the result of the natural
Noise-Induced Hearing Loss
Prolonged exposure to loud noise damages the hair cells in the cochlea and results in
Otitis media is a middle-ear infection characterized by the accumulation of fluid in the middle ear. This can be caused by allergies, head colds, inflamed tonsils and adenoids, Eustachian tube dysfunction, sore throats and viruses.
This is a disease of the middle ear that specifically affects the movement of one of the three tiny bones (stapes) in the middle ear. Otosclerosis can cause a conductive hearing loss and patients with this problem may benefit from surgery or a hearing aid.
Cholesteatoma is a type of skin cyst or sac located in the middle ear. People may be born with cholesteatoma or acquire it as a complication of repeated ear infections and Eustachian tube dysfunction. Cholesteatomas are benign but can erode the surrounding structures of the ear and cause hearing loss. The initial treatment for cholesteatoma is to stop the infection with antibiotics and ear drops; however, surgery is required in some cases.
Ménière’s disease affects the inner ear and is characterized by deafness, dizziness (vertigo), and ringing in the ear (tinnitus).
Some drugs and antibiotics can cause damage to hair cells in the inner ear and the auditory nerve.
Some of these drugs known to be ototoxic are：
- Aminoglycoside antibiotics (such as streptomycin, neomycin, or kanamycin)
- Salicylates in large quantities (aspirin)
- Loop diuretics (Lasix or ethacrynic acid)
- Drugs used in chemotherapy regimens (cisplatin, carboplatin, or nitrogen mustard)
An acoustic neuroma is an example of a benign
Wax can build up in the ear canal, stopping sound from passing through the ear canal. Our audiologist can periodically remove the ear wax (cotton swabs or sharp objects should never be used to clean the ears because they can push the wax deeper into the ear and may puncture the eardrum).
Sudden Hearing Loss
Sudden hearing loss may be due to drugs, trauma, infection, or disease. There are, however, many instances when no cause can be found. There are two theories as to what happens in these cases: Vascular Occlusion which is the abrupt interference of blood supply to the cochlea and Viral
Perforation of the eardrum can be caused by a change in air pressure associated with flying or scuba diving, a foreign object such as a cotton swab used to clean the ears, or pressure caused by a middle-ear infection.
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