+25 Anaphylactoid Reactions References. Web anaphylactoid reaction or pseudoallergic reaction is defined as a condition presenting with symptoms similar to an allergic reaction but without detectable immunological sensitization, as found in classical allergic reactions. [ 1, 2] the classic form involves prior sensitization to an allergen with later reexposure, producing symptoms via an immunologic mechanism.
Web the term “anaphylactoid” reaction has been traditionally defined as a clinically similar event not mediated by ige. Low blood pressure (hypotension) constriction of the airways and a swollen tongue or throat, which can cause wheezing and trouble breathing; Vasoactive mediators of these reactions include histamine, eosinophilic chemotactic factors of anaphylaxis, slow reacting substance.
