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

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noun
: a state of shock in an anaphylactic animal resulting from injection or more rarely ingestion of sensitizing antigen or hapten and due mainly to contraction of smooth muscle and increased capillary permeability caused by release in the tissues and circulation of histamine, heparin, and perhaps acetylcholine and serotonin

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Pathol. a severe and sometimes fatal allergic reaction to a foreign substance, esp. a protein, as serum or bee venom, to which an individual has become sensitized, often involving rapid swelling, acute respiratory distress, and collapse of circulation.
[1905-10]

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anaphylactic shock noun
A sudden and severe instance of anaphylaxis
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Main Entry:anaphylaxis

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anaphylactic shock UK [ˌænəfɪlæktɪk ˈʃɒk] US [ˌænəfɪˈlæktɪk ʃɒk] noun [uncountable] medical
a serious medical reaction caused by someone eating or touching something that they are allergic to (=something that makes them ill) . Common causes are nuts, eggs, and drugs such as penicillin .
Thesaurus: specific medical conditionshyponym allergies and allergyhyponym general words for illnesses, diseases and medical conditionssynonym

Useful english dictionary. 2012.

Look at other dictionaries:

  • anaphylactic shock — n. (Med.) a severe form of physiological shock, often having a fatal outcome, caused by an extreme immunological reaction to antigens. It is a severe form of {anaphylaxis[2]}, and is characterized by smooth muscle contraction and capillary… …   The Collaborative International Dictionary of English

  • anaphylactic shock — n 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 esp. by respiratory symptoms,… …   Medical dictionary

  • 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 shock — an|a|phy|lac|tic shock [ˌænəfılæktık ˈʃɔk US ˈʃa:k] n [U] medical a very sudden serious physical reaction that is caused by an ↑allergy to something such as nuts, eggs, or the ↑sting of some insects. The reaction causes shock, breathing… …   Dictionary of contemporary English

  • anaphylactic shock — an|a|phy|lac|tic shock [ ,ænəfı læktık ʃɒk ] noun uncount MEDICAL a serious medical reaction caused by someone eating or touching something that they are ALLERGIC to (=something that makes them sick). Common causes are nuts, eggs, and drugs such… …   Usage of the words and phrases in modern English

  • anaphylactic shock — noun Date: 1910 an often severe and sometimes fatal systemic reaction in a susceptible individual upon exposure to a specific antigen (as wasp venom or penicillin) after previous sensitization that is characterized especially by respiratory… …   New Collegiate Dictionary

  • anaphylactic shock — Pathol. a severe and sometimes fatal allergic reaction to a foreign substance, esp. a protein, as serum or bee venom, to which an individual has become sensitized, often involving rapid swelling, acute respiratory distress, and collapse of… …   Universalium

  • anaphylactic shock — noun A severe and rapid systemic allergic reaction to an allergen, constricting the trachea and preventing breathing. Syn: anaphylaxis …   Wiktionary

  • anaphylactic shock — UK [ˌænəfɪlæktɪk ˈʃɒk] / US [ˌænəfɪˈlæktɪk ʃɒk] noun [uncountable] medical a serious medical reaction caused by someone eating or touching something that they are allergic to (= something that makes them ill). Common causes are nuts, eggs, and… …   English dictionary

  • anaphylactic shock — /ænəfəlæktɪk ˈʃɒk/ (say anuhfuhlaktik shok) noun an acute systemic reaction produced by an allergen to which the victim has become sensitised …   Australian English dictionary

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