Mindblown: a blog about philosophy.
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Postlingual deafness
Hearing impairment that develops after a patient has learned language.
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Ototoxic deafness
Hearing loss due to the toxic effect of certain chemicals or medicines on the eighth cranial nerve.
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Occupational deafness
Deafness caused by working in places where noise levels are quite high. Persons working in such an environment should wear protective devices.
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Nonsyndromic deafness
Any form of hereditary hearing impairment caused by one of many genetic mutations (e.g., in somatic, mitochondrial, or X-linked genes).
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Nerve deafness
Deafness due to a lesion of the auditory nerve or central neural pathways.
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High-frequency
Inability to hear high-frequency sounds (e.g., sound frequencies just below 20 kHz).
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Hereditary deafness
Hearing loss passed down through generations of a family.
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Cortical deafness
Deafness caused by a lesion of the auditory cortex of the brain rather than by a problem in the auditory nerve or the ear.
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Bass deafness
Inability to hear low-frequency tones.
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Acquired deafness
Loss of hearing that is not present at birth but develops later in life.
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