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n. Hypersensitivity especially in animals to a substance, such as foreign protein or a drug, that is caused by exposure to a foreign substance after a preliminary exposure.

n. See anaphylactic shock.

n. Extreme sensitivity to a substance such as a foreign protein or drug.

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

n.

n. hypersensitivity (to a protein or drug) resulting from prior contact with a substance.

n. an immediate but transient allergic reaction to an antigenic substance to which a person has become hypersensitized; it is characterized by the contraction of smooth muscle and capillary dilation. These reactions are caused by the release of certain substances such as histamine, bradykinin, serotonin, and slow-reacting substance in response to the reaction of the antigen with a mast cell-fixed antibody, chiefly IgE. This term is sometimes used to refer to the severe form of the reaction called anaphylactic shock.

n. hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

"Research: Expanded research on food allergy and anaphylaxis is necessary to understand why the prevalence of food allergy is increasing, as well as how to prevent and treat food allergies."

hypersensitivity reaction   

anaphylactic shock   

anaphylactic shock   

anaphylactoid    anaphylactic    anaphylactically   

phototaxis    praxis   

insufflation    urticaria    leishmaniasis    upregulation    oedema    cervicitis    transpiration    pharyngitis    noes'    epistaxis