Diagnostic Criteria for Anaphylaxis

Anaphylaxis is a serious allergic reaction that is rapid in onset and may cause death; it involves multiple organ systems, including the respiratory tract, gastrointestinal tract, and skin.

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Clinical Features of Anaphylaxis

Anaphylaxis can present with a spectrum of signs and symptoms affecting multiple organ systems, including the skin, gastrointestinal tract, cardiovascular system, nervous system, and both the upper and lower respiratory tracts; hallmarks of anaphylaxis are the development of hypotension or the involvement of more than one organ system.

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