Allergens are substances that can cause certain people’s immune systems to react in an exaggerated way. When these individuals come into contact with allergens, their bodies may respond by releasing chemicals that lead to symptoms like sneezing, itching, swelling, or even more severe reactions. Common allergens include things like pollen, dust mites, pet dander, certain foods, and certain medications. Eg. Milk, Eggs, Fish, Crustaceans, shellfish, Tree nuts, Peanuts, Wheat, & Soy
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