anaphylaxis

noun
ana·​phy·​lax·​is | \ ˌa-nə-fə-ˈlak-səs How to pronounce anaphylaxis (audio) \
plural anaphylaxes\ ˌa-​nə-​fə-​ˈlak-​ˌsēz How to pronounce anaphylaxes (audio) \

Definition of anaphylaxis

1 : hypersensitivity (as to foreign proteins or drugs) resulting from sensitization following prior contact with the causative agent

Examples of anaphylaxis in a Sentence

Recent Examples on the Web The most severe allergic reaction is known as anaphylaxis or anaphylactic shock, and mainly occurs seconds or minutes after exposure to the allergen. Leah Groth, Health.com, "You Should Definitely Go to The ER if You Have These Symptoms—Even During the Coronavirus Pandemic," 24 Apr. 2020 The app provides video and written instructions for responding to a range of conditions, and neatly organizes them into life-threatening (anaphylaxis, heart attack, stroke) and non-life threatening (broken bones, burns, flu) groups. Michael Ansaldo, PCWorld, "5 apps to prepare you for any emergency," 27 Apr. 2020 The eighth bite sent him into life-threatening anaphylaxis, from which a nurse revived him with repeated shots of adrenaline. Craig S. Smith, New York Times, "William Frankland, Pioneering Allergist, Dies at 108," 3 Apr. 2020 In the most severe case, those symptoms might develop into anaphylaxis, a life-threatening reaction in which your airways swell and close. Korin Miller, SELF, "Bethenny Frankel’s Allergic Reaction Was So Severe She 'Thought She Had a Stroke'," 18 Dec. 2018 The eighth bite sent him into life-threatening anaphylaxis, from which a nurse revived him with repeated shots of adrenaline. Craig S. Smith, BostonGlobe.com, "William Frankland, pioneering allergist," 5 Apr. 2020 Some studies have attempted to use hospitalization data as a proxy, but that only picks up people with sufficiently serious allergies to go to the ER for anaphylaxis. Sara Chodosh, Popular Science, "Half of the people who think they have food allergies actually don’t," 7 Jan. 2019 While peanut allergy symptoms can vary among individuals, the most extreme response is anaphylaxis. Jamie Primeau, NBC News, "1st peanut allergy drug for children approved by FDA," 1 Feb. 2020 Side effects were abdominal pain, vomiting, nausea, tingling in the mouth, itching, cough, runny nose, throat irritation and tightness, hives, wheezing and shortness of breath and anaphylaxis (serious, life-threatening allergic reaction). Tribune News Service, oregonlive, "Do you know a child with a peanut allergy? The FDA just approved a treatment drug," 1 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anaphylaxis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of anaphylaxis

circa 1905, in the meaning defined at sense 1

History and Etymology for anaphylaxis

New Latin, from ana- + prophylaxis

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Time Traveler for anaphylaxis

Time Traveler

The first known use of anaphylaxis was circa 1905

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Statistics for anaphylaxis

Last Updated

25 May 2020

Cite this Entry

“Anaphylaxis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anaphylaxis. Accessed 6 Jun. 2020.

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More Definitions for anaphylaxis

anaphylaxis

noun
ana·​phy·​lax·​is | \ ˌan-ə-fə-ˈlak-səs How to pronounce anaphylaxis (audio) \
plural anaphylaxes\ -​ˌsēz How to pronounce anaphylaxes (audio) \

Medical Definition of anaphylaxis

1 : hypersensitivity (as to foreign proteins or drugs) resulting from sensitization following prior contact with the causative agent

More from Merriam-Webster on anaphylaxis

Britannica English: Translation of anaphylaxis for Arabic Speakers

Britannica.com: Encyclopedia article about anaphylaxis

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