Anaphylaxis
True anaphylaxis is a type 1 hypersensitivity reaction where histamine, serotonin, leukotrienes, and other mediators are released from basophils and mast cells via an IgE-mediated mechanism. Although patients classically present with cutaneous findings (urticaria, erythema, etc.), respiratory symptoms (wheezing, stridor), gastrointestinal disturbances, tachycardia, and hypotension are also frequently associated with…
