Definitions for "anaphylaxis"
hypersensitivity (to a protein or drug) resulting from prior contact with a substance.
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.
an immediate allergic reaction to a pharmacologic agent
Keywords:  plasmapheresis
Griseofulvin Phototherapy
Keywords:  phobia, gastrointestinal
Gastrointestinal Phobia
An increased susceptibility to a foreign protein resulting from previous exposure to it, as in serum treatment.