Causes of Hearing Loss :

Hearing loss may happen due to any number of reasons, ranging from simple causes like earwax buildup to ear infections to age to chemical agents in medications.

The following are some of the major causes of hearing loss:



Causes of Hearing Loss :

A persistently noisy environment with noise levels exceeding 85 Db is estimated to cause more than half the hearing loss cases. Noisy machines in households or factories, car stereos and horns, vehicles, children’s toys, incessant use of earphones are some common environmental factors which cause hearing loss at low and high frequencies. A sudden short-term exposure to loud noise like an explosion or very loud mike can also cause temporary hearing loss.



HEREDITARY

Hereditary hearing loss can either be accompanied by other medical conditions (syndromic) or be independent of other medical reasons (nonsyndromic). Incidentally, approximately 70 out of 100 cases of hereditary deafness are nonsyndromic. Illnesses with deafness as a possible effect include Measles, Meningitis, Autoimmune disease, Mumps, Presbycusis, Adenoids, AIDS, Fetal alcohol syndrome, Premature birth, Syphilis, Otosclerosis, Superior canal, neurological disorders etc.



MEDICATIONS

Some medications cause irreversible damage to the ear, and are limited in their use for this reason. The most important group is the aminoglycosides (main member gentamicin). Many antimalarial, antidiuretic and antibiotic drugs have hearing loss as a side-effect.



PHYSICAL TRAUMA AND INFECTIONS

Accident, injury, or other any external forces can cause physiogical damage to the ear, affecting the ability to hear. Head injuries that severely damage an inner part of the ear, or cause ruptured ear drums can progress to hearing loss . Sometimes middle ear infections due to earwax accumulation can cause temporary hearing loss



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