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New allergies and intolerances
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The topic of this article is the '''development of new sensitivities''' or the '''development of new allergies and intolerances''' which were not present before illness, or allergies or intolerances that have worsened since the onset of illness. Allergies, sensitivities and intolerances are recognized occurrences and common in [[ME/CFS]] patients.<ref name="ICC2011criteria" /><ref name="CDC-MEsymp" /> The development of new sensitivities, such as to food, alcohol, or drugs, after the onset of ME/CFS is common.<ref>{{Cite web|url=https://meassociation.org.uk/2021/10/sensitivities-intolerances-and-hypersensitivities-in-me-cfs/ | title = New Leaflet: Sensitivities, Intolerances, and Hypersensitivities in ME/CFS {{!}} The ME Association | date = 2021-10-21 | website = meassociation.org.uk|language=en-GB|access-date=2022-05-07}}</ref> In [[Long COVID]], a large international survey found that some patients experienced new [[Allergy|allergies]] including [[anaphylaxis]], and worsening of existing allergies.<ref>{{Cite journal | title = Characterizing long COVID in an international cohort: 7 months of symptoms and their impact | date = 2021-08-01|url=https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00299-6/abstract|journal=eClinicalMedicine|volume=38 | last = Davis | first = Hannah E. | last2 = Assaf | first2 = Gina S. | last3 = McCorkell | first3 = Lisa | last4 = Wei | first4 = Hannah | last5 = Low | first5 = Ryan J. | last6 = Re'em | first6 = Yochai | last7 = Redfield | first7 = Signe | last8 = Austin | first8 = Jared P. | last9 = Akrami | first9 = Athena|language=English|doi=10.1016/j.eclinm.2021.101019|pmid=34308300|issn=2589-5370}}</ref> ==Symptom recognition== *The [[International Consensus Criteria]] lists ''sensitivities to food, medications, odors or chemicals'' as an optional criteria for diagnosis, under the section ''C. Immune, gastro-intestinal and genitourinary impairments''.<ref name="ICC2011criteria">{{citation | last1 = Carruthers | first1 = BM | authorlink1 = Bruce Carruthers | last2 = van de Sande | first2 = MI | authorlink2 = Marjorie van de Sande | last3 = De Meirleir | first3 = KL | authorlink3 = Kenny de Meirleir | last4 = Klimas | first4 = NG | authorlink4 = Nancy Klimas | last5 = Broderick | first5 = G | authorlink5 = Gordon Broderick | last6 = Mitchell | first6 = T | authorlink6 = Terry Mitchell | last7 = Staines | first7 = D | authorlink7 = Donald Staines | last8 = Powles | first8 = ACP | authorlink8 = A C Peter Powles | last9 = Speight | first9 = N | authorlink9 = Nigel Speight | last10 = Vallings | first10 = R | authorlink10 = Rosamund Vallings | last11 = Bateman | first11 = L | authorlink11 = Lucinda Bateman | last12 = Baumgarten-Austrheim | first12 = B | authorlink12 = Barbara Baumgarten-Austrheim | last13 = Bell | first13 = DS | authorlink13 = David Bell | last14 = Carlo-Stella | first14 = N | authorlink14 = Nicoletta Carlo-Stella | last15 = Chia | first15 = J | authorlink15 = John Chia | last16 = Darragh | first16 = A | authorlink16 = Austin Darragh | last17 = Jo | first17 = D | authorlink17 = Daehyun Jo | last18 = Lewis | first18 = DP | authorlink18 = Donald P Lewis | last19 = Light | first19 = AR | authorlink19 = Alan Light | last20 = Marshall-Gradisnik | first20 = S | authorlink20 = Sonya Marshall-Gradisnik | last21 = Mena | first21 = I | authorlink21 = Ismael Mena | last22 = Mikovits | first22 = JA | authorlink22 = Judy Mikovits | last23 = Miwa | first23 = K | authorlink23 = Kunihisa Miwa | last24 = Murovska | first24 = M | authorlink24 = Modra Murovska | last25 = Pall | first25 = ML | authorlink25 = Martin Pall | last26 = Stevens | first26 = SR | authorlink26 = Staci Stevens | title = Myalgic encephalomyelitis: International Consensus Criteria | journal = Journal of Internal Medicine| volume = 270| issue = 4| page = 327–338| date = August 22, 2011 | pmid = 21777306 | doi = 10.1111/j.1365-2796.2011.02428.x | url = http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2796.2011.02428.x/full}}</ref> *2018, The [[Centers for Disease Control and Prevention]] note ME/CFS patients can have "allergies and sensitivities to foods, odors, chemicals, or noise."<ref name="CDC-MEsymp">{{Cite web | title = Symptoms {{!}} Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)|url=https://www.cdc.gov/me-cfs/symptoms-diagnosis/symptoms.html|website=[[Centers for Disease Control and Prevention]] | date = 2018-05-18|access-date=2018-08-23|language=en-us}}</ref> ==Types of sensitivities== *[[Chemical sensitivities]] *[[Food sensitivities]] *[[Medicine sensitivities]] *[[Odor sensitivities]] *[[Allergy|allergies]] which can cause [[anaphylaxis|anaphylatic shock]] ==Prevalence== *In a 2001 Belgian study, 48.5% of patients meeting the [[Fukuda criteria]] and 54.8% of patients meeting the [[Holmes criteria]], in a cohort of 2073 [[Chronic fatigue syndrome|CFS]] patients, reported new sensitivities to food or drugs.<ref name="DeBecler2001">{{Cite journal | last = De Becker | first = Pascale | authorlink = Pascale De Becker | last2 = McGregor | first2 = Neil | authorlink2 = Neil McGregor | last3 = De Meirleir | first3 = Kenny | author-link3 = Kenny De Meirleir | date = Dec 2001 | title = A definition‐based analysis of symptoms in a large cohort of patients with chronic fatigue syndrome|url=https://onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2796.2001.00890.x?sid=nlm%3Apubmed|journal=Journal of Internal Medicine|volume=250|issue=3|pages=234–240|doi=10.1046/j.1365-2796.2001.00890.x|quote=|via=}}</ref> ==See also == *[[Food sensitivities]] *[[Allergy]] *[[Mast cell activation syndrome]] ==References== {{Reflist}} [[Category:Signs and symptoms]] [[Category:Long COVID signs and symptoms]] [[Category:Allergy signs and symptoms]] [[Category:Immune signs and symptoms]]
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