SUBSCRIBESUBSCRIBESUBSCRIBE TO PREMIUMHomeHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyGames & QuizzesVideosOn This DayOne Good FactDictionaryNew ArticlesHistory & SocietyLifestyles & Social IssuesPhilosophy & ReligionPolitics, Law & GovernmentWorld HistoryScience & TechHealth & MedicineScienceTechnologyBiographiesBrowse BiographiesAnimals & NatureBirds, Reptiles & Other VertebratesEnvironmentFossils & Geologic TimeInsects & Other InvertebratesMammalsPlantsGeography & TravelGeography & TravelArts & CultureEntertainment & Pop CultureLiteratureSports & RecreationVisual ArtsImage GalleriesPodcastsSummariesTop QuestionsLists and StoriesBritannica KidsAsk the ChatbotGames & QuizzesHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyVideosimmune system disorderIntroductionImmune deficienciesHereditary and congenital deficienciesDeficiencies caused by infectionDeficiencies caused by drug therapyDeficiencies caused by malnutritionDeficiencies associated with limited environmental exposureAllergiesType I hypersensitivitySensitization, activation, and effector phasesType I allergic reactionsTypical type I allergensTreatment of type I allergic responsesType II hypersensitivityType III hypersensitivityType IV hypersensitivityTuberculin-type hypersensitivityContact hypersensitivity and dermatitisAutoimmune disordersBasic processes underlying autoimmunityAlteration of self antigensRelease of sequestered self antigensCross-reaction with foreign antigensGenetic factorsExamples of autoimmune disordersAutoimmune diseases of the thyroid glandAutoimmune hemolytic anemiaPernicious anemia and autoimmune gastritisRheumatoid arthritisSystemic lupus erythematosusMultiple sclerosisType I (insulin-dependent) diabetes mellitusOther autoimmune disordersCancers of the lymphocytesGenetic causes of cancerMalignant transformation of lymphocytesTreatment of cancers through identification of antigensReferences & Edit HistoryRelated TopicsImages & Videos44 Questions from Britannicaâs Most Popular Health and Medicine QuizzesHealth & MedicineConditions & DiseasesImmune System Disordersimmune system disorderAllergiesFacebookXhttps://www.britannica.com/science/immune-system-disorderMayo Clinic - Primary ImmunodeficiencyUniversity of Rochester Medical Center - Disorders of the Immune SystemHealthline - Autoimmune Diseases: Types, Symptoms, Causes and MoreNational Center for Biotechnology Information - Immune System and Chronic DiseasesMerck Manuals - Consumer Version - Overview of Immunodeficiency DisorderRight Diagnosis - Immune DisorderLiveScience - Immune System: Diseases, Disorders and FunctionNational Institute of Allergy and Infectious Diseases - Disorders of the Immune SystemJohn H. Humphrey
Professor of Immunology, Royal Postgraduate Medical School, University of London, 1976â81. Coeditor of Advances in Immunology.AllBritannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....Historyanaphylaxisacuteinflammationinnocuoushay feverasthmaextensivehivesinduceanaphylaxisblood pressurepenicillintype I hypersensitivitysubsequentdermatitisallergenshereditaryallergenspollenincidencemitespotenthypersensitivity
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