loading...| Preferred Name | Hearing impairment | |
| Synonyms |
Hearing loss Hypoacusis Hearing defect Hearing impairment Deafness Hypacusis |
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| Definitions |
A decreased magnitude of the sensory perception of sound. Hearing loss can be categorized by which part of the auditory system is damaged, as conductive hearing loss, sensorineural hearing loss, and mixed hearing loss. Another axis of classification uses the degree of hearing impairment. The degree of hearing loss is computed by using a three frequency average taken at 500 Hz, 1,000 Hz and 2,000 Hz. The average of these three frequencies is called the Pure Tone Average (PTA). 0-20 dB is considered normal, 21-40 dB mild loss, 41-60 dB moderate loss, 61-70 dB moderately severe loss,71-90 dB severe loss, and greater than 90 dB profound loss. Note that the word deafness is occasionally used to describe partial hearing loss. The World Health Organization uses the word deafness to refer to complete loss of the ability to hear, and hearing impairment to refer to any degree of reduced hearing. |
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| ID |
http://purl.obolibrary.org/obo/HP_0000365 |
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| comment |
Hearing loss can be categorized by which part of the auditory system is damaged, as conductive hearing loss, sensorineural hearing loss, and mixed hearing loss. Another axis of classification uses the degree of hearing impairment. The degree of hearing loss is computed by using a three frequency average taken at 500 Hz, 1,000 Hz and 2,000 Hz. The average of these three frequencies is called the Pure Tone Average (PTA). 0-20 dB is considered normal, 21-40 dB mild loss, 41-60 dB moderate loss, 61-70 dB moderately severe loss,71-90 dB severe loss, and greater than 90 dB profound loss. Note that the word deafness is occasionally used to describe partial hearing loss. The World Health Organization uses the word deafness to refer to complete loss of the ability to hear, and hearing impairment to refer to any degree of reduced hearing. |
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| database_cross_reference |
UMLS:C1384666 SNOMEDCT_US:15188001 UMLS:C0011053 MSH:D003638 UMLS:C0018772 SNOMEDCT_US:343087000 SNOMEDCT_US:95828007 UMLS:C0339789 MSH:D034381 SNOMEDCT_US:103276001 Fyler:4868 |
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| has exact synonym |
Hearing defect Hearing impairment Deafness Hypacusis |
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| has related synonym |
Hearing loss Hypoacusis |
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| has_alternative_id |
HP:0000404 HP:0001728 HP:0001729 HP:0001754 HP:0008560 HP:0008563 |
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| has_obo_namespace |
human_phenotype |
|
| id |
HP:0000365 |
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| imported from | ||
| label |
Hearing impairment |
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| notation |
HP:0000365 |
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| prefLabel |
Hearing impairment |
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| textual definition |
A decreased magnitude of the sensory perception of sound. |
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| subClassOf |