Anaphylaxis Definition

ănə-fə-lăksĭs
noun
A condition of hypersensitivity to proteins or other substances, requiring previous exposure to the allergenic substance and resulting in shock or other physical reactions.
Webster's New World
A sudden, usually systemic allergic reaction, characterized by vasodilation resulting in decreased blood pressure, smooth muscle contraction resulting in shortness of breath, and hives, caused by hypersensitivity induced by a secondary exposure to a foreign substance, such as a drug or protein, after an initial sensitizing exposure.
American Heritage Medicine
Extreme sensitivity to a substance such as a foreign protein or drug.
Wiktionary

A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock.

Wiktionary

Other Word Forms of Anaphylaxis

Noun

Singular:
anaphylaxis
Plural:
anaphylaxes

Origin of Anaphylaxis

  • ana– (pro)phylaxis

    From American Heritage Dictionary of the English Language, 5th Edition

Anaphylaxis Sentence Examples

  • Individuals receiving all shots will be monitored closely following each shot because of the small risk of anaphylaxis, a condition that can result in difficulty breathing and a sharp drop in blood pressure.

  • Each year about 200 adults and children in the United States die from food-related anaphylaxis, an extreme reaction that causes swelling of the throat and bronchial passages, shock, and a severe drop in blood pressure.

  • In a very few cases, milk allergy can cause anaphylaxis.

  • Anaphylaxis is thought to result from antigen-antibody interactions on the surface of mast cells, connective tissue cells that are believed to contain a number of regulatory, or mediator, chemicals.

  • Although children may lose their sensitivity to penicillin, if the reaction was urticarial or anaphylaxis, they are not re-challenged with the drug for safety reasons (i.e. it is not possible to predict who has lost sensitivity).

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Words Starting With

AANANA

Words Ending With

SISXIS

Unscrambles

anaphylaxis

Words Starting With A and Ending With S

Starts With A & Ends With SStarts With AN & Ends With SStarts With A & Ends With IS

Word Length

11 Letter Words11 Letter Words Starting With A11 Letter Words Ending With S