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==Overview==
==Overview==
[[Hearing impairment]] may be a partial or complete decrease in the ability to perceive or comprehend [[Sounds and Mind|sounds]].<ref name="def1">{{cite web|url=http://www.oafccd.com/factshee/fact59.htm|title=Speech and Language Terms and Abbreviations|accessdate=2006-12-02}}</ref> Caused by a good range of [[biological]] and [[environmental factors]], loss of hearing can happen to any organism that perceives sound. It is highly [[Prevalence|prevalent]] impairment and chances increase as one's age above 60.<ref name="pmid33253610">{{cite journal| author=Nieman CL, Oh ES| title=Hearing Loss. | journal=Ann Intern Med | year= 2020 | volume= 173 | issue= 11 | pages= ITC81-ITC96 | pmid=33253610 | doi=10.7326/AITC202012010 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=33253610  }}</ref>Classification is based on [[laterality]], [[severity]], cause, [[anatomy]] of ear, [[symmetry]], clinical characteristics, [[Age|age of onset]], and associated [[symptoms]].
[[Hearing impairment]] may be a partial or complete decrease in the ability to perceive or comprehend [[Sounds and Mind|sounds]].<ref name="def1">{{cite web|url=http://www.oafccd.com/factshee/fact59.htm|title=Speech and Language Terms and Abbreviations|accessdate=2006-12-02}}</ref> Caused by a good range of [[biological]] and [[environmental factors]], loss of hearing can happen to any organism that perceives sound. It is highly [[Prevalence|prevalent]] impairment and chances increase as one's age above 60.<ref name="pmid33253610">{{cite journal| author=Nieman CL, Oh ES| title=Hearing Loss. | journal=Ann Intern Med | year= 2020 | volume= 173 | issue= 11 | pages= ITC81-ITC96 | pmid=33253610 | doi=10.7326/AITC202012010 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=33253610  }}</ref>Classification is based on [[laterality]], [[severity]], cause, [[anatomy]] of ear, [[symmetry]], clinical characteristics, [[Age|age of onset]], and associated [[symptoms]]. Sound waves vary in [https://www.wikidoc.org/index.php/Amplitude amplitude] and in [https://www.wikidoc.org/index.php/Frequency frequency]. Amplitude is that the sound wave's peak pressure variation. Frequency is that the number of cycles per second of a sinusoidal component of a wave. Loss of the power to detect some frequencies, or to detect low-amplitude sounds, that an organism naturally detects, may be termed as a [https://www.wikidoc.org/index.php/Hearing_impairment hearing disorder]. Hearing sensitivity is indicated by the quietest sound that a person can detect, termed the hearing [https://www.wikidoc.org/index.php/Threshold_potential threshold]. The normal hearing threshold is not the same for all [https://www.wikidoc.org/index.php/Frequencies frequencies] of sounds. The Long term exposure to environmental noise, [https://www.wikidoc.org/index.php/Genetics Genetics], [https://www.wikidoc.org/index.php/Disease Disease or illness], [https://www.wikidoc.org/index.php/Medications Medications]<ref name="pmid28002638">{{cite journal| author=Lanvers-Kaminsky C, Zehnhoff-Dinnesen AA, Parfitt R, Ciarimboli G| title=Drug-induced ototoxicity: Mechanisms, Pharmacogenetics, and protective strategies. | journal=Clin Pharmacol Ther | year= 2017 | volume= 101 | issue= 4 | pages= 491-500 | pmid=28002638 | doi=10.1002/cpt.603 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=28002638  }}</ref>, and [https://www.wikidoc.org/index.php/Physical%20trauma Physical trauma] are different biological mechanisms for [https://www.wikidoc.org/index.php/Hearing%20loss hearing loss].


==References==
==References==

Revision as of 09:42, 8 May 2021

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Overview

Hearing impairment may be a partial or complete decrease in the ability to perceive or comprehend sounds.[1] Caused by a good range of biological and environmental factors, loss of hearing can happen to any organism that perceives sound. It is highly prevalent impairment and chances increase as one's age above 60.[2]Classification is based on laterality, severity, cause, anatomy of ear, symmetry, clinical characteristics, age of onset, and associated symptoms. Sound waves vary in amplitude and in frequency. Amplitude is that the sound wave's peak pressure variation. Frequency is that the number of cycles per second of a sinusoidal component of a wave. Loss of the power to detect some frequencies, or to detect low-amplitude sounds, that an organism naturally detects, may be termed as a hearing disorder. Hearing sensitivity is indicated by the quietest sound that a person can detect, termed the hearing threshold. The normal hearing threshold is not the same for all frequencies of sounds. The Long term exposure to environmental noise, Genetics, Disease or illness, Medications[3], and Physical trauma are different biological mechanisms for hearing loss.

References

  1. "Speech and Language Terms and Abbreviations". Retrieved 2006-12-02.
  2. Nieman CL, Oh ES (2020). "Hearing Loss". Ann Intern Med. 173 (11): ITC81–ITC96. doi:10.7326/AITC202012010. PMID 33253610 Check |pmid= value (help).
  3. Lanvers-Kaminsky C, Zehnhoff-Dinnesen AA, Parfitt R, Ciarimboli G (2017). "Drug-induced ototoxicity: Mechanisms, Pharmacogenetics, and protective strategies". Clin Pharmacol Ther. 101 (4): 491–500. doi:10.1002/cpt.603. PMID 28002638.

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