anaphylactic shock

noun

: an often severe and sometimes fatal systemic reaction in a susceptible individual upon exposure to a specific antigen (such as wasp venom or penicillin) after previous sensitization that is characterized especially by respiratory symptoms, fainting, itching, and hives

Examples of anaphylactic shock in a Sentence

Recent Examples on the Web

Among the most severe of food allergies are those involving peanuts, many of which can cause anaphylactic shock, possibly leading to hospitalization or even death. —Madison Dapcevich, Discover Magazine, 25 Mar. 2025

The consumption of 10 milligrams of sulfites per serving has been reported to elicit severe reactions in some asthmatics, according to the FDA, potentially resulting in anaphylactic shock, a life-threatening allergic reaction. —Dan Perry, Newsweek, 19 Feb. 2025

These drugs can result in anaphylactic shock, which can slow or halt breathing. —Emily Kay Votruba, EverydayHealth.com, 28 Jan. 2025

James, 4, has a nut allergy and went into anaphylactic shock at a restaurant. —Sara Vallone, Miami Herald, 2 Feb. 2025

Word History

First Known Use

1909, in the meaning defined above

Rhymes for anaphylactic shock

• aftershock
• antiknock
• arawak
• hollyhock
• interlock
• isopach
• manioc
• shuttlecock
• tomahawk
• weathercock
• alcock
• beanstalk

Medical Definition

anaphylactic shock

noun

: an often severe and sometimes fatal systemic reaction in a susceptible individual upon a second exposure to a specific antigen (as wasp venom or penicillin) after previous sensitization that is characterized especially by respiratory symptoms, fainting, itching, and hives