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en.wikipedia.org/wiki/Allergy

Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to something in the environment that ...

acaai.org/allergies

Early identification of childhood allergies will improve your child's quality of life, reduce the number of missed school days and help you avoid having to use sick  ...

medlineplus.gov/allergy.html

An allergy is a reaction by your immune system. Substances that cause reactions include pollen and food. Find the full list of allergies and symptoms.

www.aaaai.org/conditions-and-treatments/allergies

Symptoms, Diagnosis, Treatment & Management. Allergies are among the most common chronic conditions worldwide. Allergy symptoms range from making ...

www.webmd.com/allergies/default.htm

Allergies affect nearly 20% of Americans. Here you'll find in-depth allergy information including treatments.

www.mayoclinic.org/diseases-conditions/allergies/home/ovc-20270181

Nov 22, 2016 ... Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or to a food that doesn't ...

www.mayoclinic.org/diseases-conditions/allergies/symptoms-causes/syc-20351497

Aug 7, 2017 ... Overview. Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that ...

kidshealth.org/en/parents/allergy.html

Millions of Americans, including many kids, have an allergy. Find out how allergies are diagnosed and how to keep them under control.

www.aafa.org/page/allergy-facts.aspx

More Americans than ever before say they are suffering from allergies. It is among the country's most common, yet often overlooked, diseases.