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excessive buildup of wax in ear, often reducing hearing acuity, especially in elderly persons
inflammation of the middle ear from changes in atmospheric pressure; often occurs in frequent air travel
blockage of the eustachian tube usually as a result of infection, as in otitis media
conductive hearing loss
hearing impairment caused by interferences with sound or vibratory energy in the external canal, middle ear, ossicles
sensorineural hearing loss
hearing impairment caused by lesions or dysfunction of the cochlea or auditory nerve
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