What medical treatment is used to combat severe anaphylaxis?

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Severe anaphylaxis is a rapid, life-threatening reaction that needs immediate reversal of airway constriction, swelling, and low blood pressure. The quickest and most effective remedy is an epinephrine injection, because it constricts blood vessels to raise blood pressure and reduces swelling, while also opening the airways by relaxing bronchial smooth muscle. Antihistamines and corticosteroids are added to help control symptoms and prevent a later reaction, but they do not act as quickly as epinephrine. Intravenous fluids support circulation and help manage shock, but they don’t rapidly reverse airway obstruction or vasodilation on their own. Surgical removal of antigen isn’t a treatment for this emergency. So the combination that includes epinephrine with additional antihistamines and corticosteroids best addresses both the immediate danger and subsequent inflammatory response.