anaphylactic hypersensitivity

anaphylactic hypersensitivity
the most severe form of type I hypersensitivity, manifest as anaphylaxis. The term is sometimes used more loosely to describe any form of type I hypersensitivity, when contrasting this group with other types of hypersensitivity (e.g., types II–IV).

Medical dictionary. 2011.

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  • anaphylactic shock — noun a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure • Hypernyms: ↑anaphylaxis * *… …   Useful english dictionary

  • hypersensitivity — In immunology, a state of excessive and potentially damaging immune responsiveness as a result of previous exposure to antigen. If the hypersensitivity is of the immediate type (antibody mediated), then the response occurs in minutes; in delayed… …   Dictionary of molecular biology

  • anaphylactic shock — anaphylaxis anaphylaxis n. 1. [Gr. ana back, way from + fy laxis security, protection.] 1. (Med.) hypersensitivity (to a protein or drug) resulting from prior contact with a substance. [WordNet 1.5] 2. (Med.) an immediate but transient allergic… …   The Collaborative International Dictionary of English

  • anaphylactic — adjective related to the hypersensitivity known as anaphylaxis anaphylactic shock • Pertains to noun: ↑anaphylaxis • Derivationally related forms: ↑anaphylaxis …   Useful english dictionary

  • hypersensitivity reaction — noun an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock • Hypernyms: ↑hypersensitivity •… …   Useful english dictionary

  • Type I hypersensitivity — Infobox Disease Name = Type I hypersensitivity Caption = SEM of miscellaneous plant pollens. Pollens are very common allergens. DiseasesDB = ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D006969 Type I… …   Wikipedia

  • Anaphylaxis — Infobox Disease Name = Anaphylaxis Caption = DiseasesDB = 29153 ICD10 = ICD10|T|78|2|t|66 ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = med eMedicineTopic = 128 MeshID = D000707 Anaphylaxis is an acute systemic (multi system) and severe Type …   Wikipedia

  • immune system disorder — Introduction        Disorders of the immune systemany of various failures in the body s defense mechanisms against infectious organisms (see table (Disorders of the immune system)). Disorders of immunity include immune deficiency diseases, such… …   Universalium

  • IgE — Immunoglobulin E; the immunoglobulin class that binds to mast cells and basophils, and is responsible for type I or anaphylactic hypersensitivity reactions such as hay fever and asthma. IgE is also involved in resistance to helminth parasites …   Dictionary of microbiology

  • anaphylaxis — anaphylactic /an euh feuh lak tik/, adj. anaphylactically, adv. /an euh feuh lak sis/, n. Pathol. exaggerated allergic reaction to a foreign protein resulting from previous exposure to it. [1905 10; ANA + (PRO)PHYLAXIS] * * * Severe, immediate,… …   Universalium

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