Allergy
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=
|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=
- ↑ 1.0 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) - ↑ "Anaphylaxis". National Health Service. February 18, 2021. Text "access-" ignored (help); Cite has empty unknown parameters:
|1=and|2=(help) - ↑ "Definition of ANAPHYLACTIC SHOCK". Merriam-Webster Dictionary. February 18, 2021. Text "access-" ignored (help); Cite has empty unknown parameter:
|1=(help) - ↑ 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) - ↑ 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) - ↑ https://www.jacionline.org/article/S0091-6749(98)70090-9/fulltext
- ↑ 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:
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