Allergies. A common Disease

 Allergies are a condition in which the immune system reacts abnormally to substances that are generally harmless to most people. These substances, called allergens, can trigger a range of reactions, from mild to severe. Here's a detailed overview of allergies as a condition:Common AllergensEnvironmental Allergens:Pollen (from trees, grasses, weeds)Dust mitesMold sporesAnimal danderFood Allergens:Nuts (peanuts, tree nuts)Dairy productsEggsShellfish...

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