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Anaphylaxis   Listen
noun
anaphylaxis  n.  
1.
(Med.) Hypersensitivity (to a foreign antigen) resulting from prior contact with the same or a related substance.
2.
(Med.) An immediate but transient systemic reaction to an antigenic substance to which a person has become hypersensitized; it is characterized by the contraction of smooth muscle and capillary dilation. Note: The cascade of events is triggered by binding of the foreign antigen to immunoglobulin E and release of mediators such as histamine, bradykinin, serotonin, and slow-reacting substance from mast cells. It involves more than one organ system. The most commonly involved organs are skin, cardiovascular, respiratory and gastrointestinal systems. Anaphylaxis is manifested by a range of signs and symptoms including pruritus, urticaria, itching, dyspnea, abdominal pain and cardiovascular collapse (shock). A severe form of the reaction is called anaphylactic shock.
3.
(Med) Anaphylactic shock.






Collaborative International Dictionary of English 0.48








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"Anaphylaxis" Quotes from Famous Books



... "Serum Disease" and Anaphylaxis.—It is to be borne in mind that some patients exhibit a supersensitiveness with regard to protective sera, an injection being followed in a few days by the appearance of an urticarial or erythematous rash, pain and swelling of the joints, and a variable degree of fever. These symptoms, ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles



Words linked to "Anaphylaxis" :   drug, anaphylactic, hypersensitivity reaction



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