Allergy: Difference between revisions

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An '''allergy''' is a long term condition in which the [[immune system]] mounts an abnormal reaction to an ordinarily harmless substance called an allergen.<ref name="aaaai-allergy">{{Cite web|url=https://www.aaaai.org/conditions-treatments/allergies/allergies-overview| |title=Allergies Overview|last=|first=|authorlink=|date=|website=American Academy of Allergy, Asthma & Immunology|archive-url=|archive-date=|url-status=|access-date=2021-10-20}}</ref> Allergic reactions vary in severity from relatively minor symptoms to [[anaphylaxis|life-threatening anaphylactic shock]].<ref name="aaaai-allergy" /> |title= |title=== Allergic reaction == |title=An allergic reaction occurs when the person's immune system produces [[Immunoglobulin E]] (IgE). When the person comes into contact with an allergen, the IgE travels to cells that release [[histamine]] and other chemicals; it is the histamine that causes the allergic reaction.<ref name="aaaai-allergy" /> |title= |title=A severe, systemic allergic reaction is called [[anaphylaxis]] or <span class="noglossary">anaphylactic shock</span>, and can be life-threatening.<ref name="Anaphylaxis-NHS">{{Cite web|url=https://www.nhs.uk/conditions/anaphylaxis/| |title=Anaphylaxis|last=|first=|authorlink=|date=2017-10-20|website=[[National Health Service]]|language=en|access-date=2021-02-18}}</ref><ref name="definition">{{Cite web|url=https://www.merriam-webster.com/dictionary/anaphylactic+shock| |title=Definition of ANAPHYLACTIC SHOCK|website=Merriam-Webster Dictionary|language=en|access-date=2021-02-18}}</ref> |title={{See also|Anaphylaxis}} |title= |title===Prevalence == |title= |title===Symptom recognition == |title=The onset of new allergies is a potential symptom of [[Long COVID]] in the [[World Health Organization Long COVID diagnostic criteria|World Health Organization]]'s definition.<ref name="WHO-longcovid-criteria">{{citation| |title=A clinical case definition of post COVID-19 condition by a Delphi consensus |title=|date =Oct 6, 2021 |publisher=[[World Health Organization]] |title=|others=World Health Organization (WHO) clinical case definition working group on post COVID-19 condition |first1=Joan B. |last1=Soriano |first2=Maya |last2=Allan |first3=Carine |last3=Alsokhn |first4=Nisreen A. |last4=Alwan |author-link4=Nisreen Alwan |first5=Lisa |last5=Askie |first6=Hannah E. |last6=Davis |author-link6=Hannah Davis |first7=Janet V. |last7=Diaz |first8=Tarun |last8=Dua |first9=Wouter |last9=de Groote |first10=Robert |last10=Jakob |first11=Marta |last11=Lado |first12=John |last12=Marshall |first13=Srin |last13=Murthy |first14=Jacobus |last14=Preller |first15=Pryanka |last15=Relan |first16=Nicoline |last16=Schiess |first17=Archana |last17=Seahwag |title=|ref=WHO reference number: WHO/2019-nCoV/Post_COVID-19_condition/Clinical_case_definition/2021.1 |title=|url =https://www.who.int/publications-detail-redirect/WHO-2019-nCoV-Post_COVID-19_condition-Clinical_case_definition-2021.1}}</ref> |title= |title=== Notable studies == |title=* 1988, Allergy and the chronic fatigue syndrome<ref name="Straus1988">{{Cite journal|last=Straus|first=S. E.|author-link=Stephen Straus|last2=Dale|first2=J. K.|author-link2=|last3=Wright|first3=R.|author-link3=|last4=Metcalfe|first4=D. D.|author-link4=|author-link5=|date=May 1988| |title=Allergy and the chronic fatigue syndrome|url=https://www.ncbi.nlm.nih.gov/pubmed/2836490|journal=The Journal of Allergy and Clinical Immunology|volume=81|issue=5 Pt 1|pages=791–795|issn=0091-6749|pmid=2836490|quote=|via=}}</ref> |title=* 1998, Chronic fatigue syndrome: identification of distinct subgroups on the basis of allergy and psychologic variables<ref name="Borish1998">https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext</ref> [https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext (Full text)] |title=* 2015, Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study<ref>{{Cite journal|last=Yang|first=Tse-Yen|author-link=|last2=Kuo|first2=Haung-Tsung|author-link2=|last3=Chen|first3=Hsuan-Ju|author-link3=|last4=Chen|first4=Chih-Sheng|author-link4=|last5=Lin|first5=Wei-Ming|author-link5=|last6=Tsai|first6=Shin-Yi|last7=Kuo|first7=Chua-Nan|last8=Kao|first8=Chia-Hung|date=Jul 2015| |title=Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study|url=https://www.ncbi.nlm.nih.gov/pubmed/26200644|journal=Medicine|volume=94|issue=29|pages=e1211|doi=10.1097/MD.0000000000001211|issn=1536-5964|pmc=4603016|pmid=26200644|quote=|via=}}</ref> |title= |title=== See also == |title=* [[Food sensitivities]] |title=* [[Medicine sensitivities]] |title=* [[Mast cell activation syndrome]] |title=* [[Multiple chemical sensitivity]] |title=* [[Histamine]] |title= |title=== Learn more == |title=* 1999, [https://www.sciencedaily.com/releases/1999/01/990119104557.htm Allergies To Foods, Plants May Predict Chronic Fatigue Syndrome] - ScienceDaily |title=* 2019, [https://www.smithsonianmag.com/smart-news/allergy-season-getting-longer-and-nastier-each-year-180971922/ Allergy Season Is Getting Longer and Nastier Each Year] - Smithsonian Magazine |title= |title===References== |title={{reflist}} |title= |title=[[Category:Diagnoses]] |title=[[Category:Immunology]] |title=[[Category:Immune signs and symptoms]] |title=[[Category:Potential comorbidities]] |title=[[Category:Long COVID signs and symptoms]]
An '''allergy''' is a long term condition in which the [[immune system]] mounts an abnormal reaction to an ordinarily harmless substance called an allergen.<ref name="aaaai-allergy">{{Cite web|url=https://www.aaaai.org/conditions-treatments/allergies/allergies-overview| |title=Allergies Overview|last=|first=|authorlink=| |date=|website=American Academy of Allergy, Asthma & Immunology|archive-url=|archive- |date=|url-status=|access- |date=2021-10-20}}</ref> Allergic reactions vary in severity from relatively minor symptoms to [[anaphylaxis|life-threatening anaphylactic shock]].<ref name="aaaai-allergy" /> |title= |title=== Allergic reaction == |title=An allergic reaction occurs when the person's immune system produces [[Immunoglobulin E]] (IgE). When the person comes into contact with an allergen, the IgE travels to cells that release [[histamine]] and other chemicals; it is the histamine that causes the allergic reaction.<ref name="aaaai-allergy" /> |title= |title=A severe, systemic allergic reaction is called [[anaphylaxis]] or <span class="noglossary">anaphylactic shock</span>, and can be life-threatening.<ref name="Anaphylaxis-NHS">{{Cite web|url=https://www.nhs.uk/conditions/anaphylaxis/| |title=Anaphylaxis|last=|first=|authorlink=| |date=2017-10-20|website=[[National Health Service]]|language=en|access- |date=2021-02-18}}</ref><ref name="definition">{{Cite web|url=https://www.merriam-webster.com/dictionary/anaphylactic+shock| |title=Definition of ANAPHYLACTIC SHOCK|website=Merriam-Webster Dictionary|language=en|access- |date=2021-02-18}}</ref> |title={{See also|Anaphylaxis}} |title= |title===Prevalence == |title= |title===Symptom recognition == |title=The onset of new allergies is a potential symptom of [[Long COVID]] in the [[World Health Organization Long COVID diagnostic criteria|World Health Organization]]'s definition.<ref name="WHO-longcovid-criteria">{{citation| |title=A clinical case definition of post COVID-19 condition by a Delphi consensus |title=| |date=Oct 6, 2021 |publisher=[[World Health Organization]] |title=|others=World Health Organization (WHO) clinical case definition working group on post COVID-19 condition |first1=Joan B. |last1=Soriano |first2=Maya |last2=Allan |first3=Carine |last3=Alsokhn |first4=Nisreen A. |last4=Alwan |author-link4=Nisreen Alwan |first5=Lisa |last5=Askie |first6=Hannah E. |last6=Davis |author-link6=Hannah Davis |first7=Janet V. |last7=Diaz |first8=Tarun |last8=Dua |first9=Wouter |last9=de Groote |first10=Robert |last10=Jakob |first11=Marta |last11=Lado |first12=John |last12=Marshall |first13=Srin |last13=Murthy |first14=Jacobus |last14=Preller |first15=Pryanka |last15=Relan |first16=Nicoline |last16=Schiess |first17=Archana |last17=Seahwag |title=|ref=WHO reference number: WHO/2019-nCoV/Post_COVID-19_condition/Clinical_case_definition/2021.1 |title=|url =https://www.who.int/publications-detail-redirect/WHO-2019-nCoV-Post_COVID-19_condition-Clinical_case_definition-2021.1}}</ref> |title= |title=== Notable studies == |title=* 1988, Allergy and the chronic fatigue syndrome<ref name="Straus1988">{{Cite journal|last=Straus|first=S. E.|author-link=Stephen Straus|last2=Dale|first2=J. K.|author-link2=|last3=Wright|first3=R.|author-link3=|last4=Metcalfe|first4=D. D.|author-link4=|author-link5=| |date=May 1988| |title=Allergy and the chronic fatigue syndrome|url=https://www.ncbi.nlm.nih.gov/pubmed/2836490|journal=The Journal of Allergy and Clinical Immunology|volume=81|issue=5 Pt 1|pages=791–795|issn=0091-6749|pmid=2836490|quote=|via=}}</ref> |title=* 1998, Chronic fatigue syndrome: identification of distinct subgroups on the basis of allergy and psychologic variables<ref name="Borish1998">https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext</ref> [https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext (Full text)] |title=* 2015, Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study<ref>{{Cite journal|last=Yang|first=Tse-Yen|author-link=|last2=Kuo|first2=Haung-Tsung|author-link2=|last3=Chen|first3=Hsuan-Ju|author-link3=|last4=Chen|first4=Chih-Sheng|author-link4=|last5=Lin|first5=Wei-Ming|author-link5=|last6=Tsai|first6=Shin-Yi|last7=Kuo|first7=Chua-Nan|last8=Kao|first8=Chia-Hung| |date=Jul 2015| |title=Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study|url=https://www.ncbi.nlm.nih.gov/pubmed/26200644|journal=Medicine|volume=94|issue=29|pages=e1211|doi=10.1097/MD.0000000000001211|issn=1536-5964|pmc=4603016|pmid=26200644|quote=|via=}}</ref> |title= |title=== See also == |title=* [[Food sensitivities]] |title=* [[Medicine sensitivities]] |title=* [[Mast cell activation syndrome]] |title=* [[Multiple chemical sensitivity]] |title=* [[Histamine]] |title= |title=== Learn more == |title=* 1999, [https://www.sciencedaily.com/releases/1999/01/990119104557.htm Allergies To Foods, Plants May Predict Chronic Fatigue Syndrome] - ScienceDaily |title=* 2019, [https://www.smithsonianmag.com/smart-news/allergy-season-getting-longer-and-nastier-each-year-180971922/ Allergy Season Is Getting Longer and Nastier Each Year] - Smithsonian Magazine |title= |title===References== |title={{reflist}} |title= |title=[[Category:Diagnoses]] |title=[[Category:Immunology]] |title=[[Category:Immune signs and symptoms]] |title=[[Category:Potential comorbidities]] |title=[[Category:Long COVID signs and symptoms]]

Revision as of 04:57, May 11, 2022

An allergy is a long term condition in which the immune system mounts an abnormal reaction to an ordinarily harmless substance called an allergen.[1] Allergic reactions vary in severity from relatively minor symptoms to life-threatening anaphylactic shock.[1] |title= |title=== Allergic reaction == |title=An allergic reaction occurs when the person's immune system produces Immunoglobulin E (IgE). When the person comes into contact with an allergen, the IgE travels to cells that release histamine and other chemicals; it is the histamine that causes the allergic reaction.[1] |title= |title=A severe, systemic allergic reaction is called anaphylaxis or anaphylactic shock, and can be life-threatening.[2][3] |title=

See also
Anaphylaxis.

|title= |title===Prevalence == |title= |title===Symptom recognition == |title=The onset of new allergies is a potential symptom of Long COVID in the World Health Organization's definition.[4] |title= |title=== Notable studies == |title=* 1988, Allergy and the chronic fatigue syndrome[5] |title=* 1998, Chronic fatigue syndrome: identification of distinct subgroups on the basis of allergy and psychologic variables[6] (Full text) |title=* 2015, Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study[7] |title= |title=== See also == |title=* Food sensitivities |title=* Medicine sensitivities |title=* Mast cell activation syndrome |title=* Multiple chemical sensitivity |title=* Histamine |title= |title=== Learn more == |title=* 1999, Allergies To Foods, Plants May Predict Chronic Fatigue Syndrome - ScienceDaily |title=* 2019, Allergy Season Is Getting Longer and Nastier Each Year - Smithsonian Magazine |title= |title===References== |title=

  1. ↑ 1.0 1.1 1.2 "Allergies Overview". American Academy of Allergy, Asthma & Immunology. October 20, 2021. Text "access-" ignored (help); Text "archive-" ignored (help); Cite has empty unknown parameters: |1= and |2= (help)
  2. ↑ "Anaphylaxis". National Health Service. February 18, 2021. Text "access-" ignored (help); Cite has empty unknown parameters: |1= and |2= (help)
  3. ↑ "Definition of ANAPHYLACTIC SHOCK". Merriam-Webster Dictionary. February 18, 2021. Text "access-" ignored (help); Cite has empty unknown parameter: |1= (help)
  4. ↑ Soriano, Joan B.; Allan, Maya; Alsokhn, Carine; Alwan, Nisreen A.; Askie, Lisa; Davis, Hannah E.; Diaz, Janet V.; Dua, Tarun; de Groote, Wouter; Jakob, Robert; Lado, Marta; Marshall, John; Murthy, Srin; Preller, Jacobus; Relan, Pryanka; Schiess, Nicoline; Seahwag, Archana (October 6, 2021), World Health Organization (WHO) clinical case definition working group on post COVID-19 condition, World Health Organization https://www.who.int/publications-detail-redirect/WHO-2019-nCoV-Post_COVID-19_condition-Clinical_case_definition-2021.1 Cite has empty unknown parameters: |2= and |1= (help); Missing or empty |title= (help)
  5. ↑ Straus, S. E.; Dale, J. K.; Wright, R.; Metcalfe, D. D. (May 1988). "Allergy and the chronic fatigue syndrome". The Journal of Allergy and Clinical Immunology. 81 (5 Pt 1): 791–795. ISSN 0091-6749. PMID 2836490. Cite has empty unknown parameters: |1= and |2= (help)
  6. ↑ https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext
  7. ↑ Yang, Tse-Yen; Kuo, Haung-Tsung; Chen, Hsuan-Ju; Chen, Chih-Sheng; Lin, Wei-Ming; Tsai, Shin-Yi; Kuo, Chua-Nan; Kao, Chia-Hung (July 2015). "Increased Risk of Chronic Fatigue Syndrome Following Atopy: A Population-Based Study". Medicine. 94 (29): e1211. doi:10.1097/MD.0000000000001211. ISSN 1536-5964. PMC 4603016. PMID 26200644. Cite has empty unknown parameters: |2= and |1= (help)

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World Health Organization (WHO) - "A specialized agency of the United Nations that is concerned with public health. It was established on 7 April 1948, and is headquartered in Geneva, Switzerland. The WHO is a member of the United Nations Development Group. Its predecessor, the Health Organization, was an agency of the League of Nations." The International Statistical Classification of Diseases and Related Health Problems (ICD) is maintained by WHO.

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