Anaphylaxis

Introduction Anaphylaxis is a severe allergic reaction. Allergic reactions can vary greatly in their severity. This may depend on the quantity and route of allergen exposure, and on the individual. The most severe reactions...

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Anti-Histamines

Histamine H1-receptor antagonists These are mostly effective against mast cell activated inflammatory reactions. In asthma, mast cells are involved in the early stages of the reaction, but their role is not great enough to...

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