An allergy is a hypersensitivity disorder of the immune system Allergic reactions occur when a person's immune system reacts to normally harmless substances in the environment.

Featured Image. Picture of Psoriasis. A reddish, scaly rash often located over the surfaces of the elbows, knees, scalp, and around or in the ears, navel, genitals or buttocks...

Allergies are more common than ever, affecting up to 1 in 3 people. From basic concepts to in-depth discussion of specific allergic diseases, a board-certified allergist makes ...

Allergy information includes articles on allergies, symptoms, treatment, medications, food allergies, and allergy relief.

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An allergy is a reaction of your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing.

allergy n. , pl. , -gies . An abnormally high sensitivity to certain substances, such as pollens, foods, or microorganisms

Causes. Allergies are pretty common. Both genes and environmental factors play a role. The immune system normally protects the body against harmful substances, such ...

Your eyes itch, your nose is running, you're sneezing, and you're covered in hives. The enemy known as allergies has struck again.

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

Think you might have seasonal allergies? Hay fever is the classic form of seasonal allergies, occurring in response to various plant pollens in the air. Find out ...

Allergies Definition. Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances. Description

Allergy Canada supplies the best quality allergy material to set the highest standards and to promote the allergist and the best practice of allergy in Canada

A food allergy is an adverse immune response to a food protein. They are distinct from other adverse responses to food, such as food intolerance, pharmacological reactions, and ...

Sneezing, difficulty breathing, cramps, and vomiting–all are allergy symptoms. Learn the types of allergies, specific allergy symptoms, and emergency warning signs.

Get tips for living with allergies, including seasonal outdoor allergies to pollen and ragweed, and reactions to indoor allergens like dust, mould, and mildew.