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...

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

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

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 ...

PubMed Health specializes in reviews of clinical effectiveness research, with easy-to-read summaries for consumers as well as full technical reports. Clinical ...

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

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

noun, plural -gies. 1. an abnormal reaction of the body to a previously encountered allergen introduced by inhalation, ingestion, injection, or skin contact, often manifested ...

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 Allergies affect 1 in every 3 people. Allergies are hypersensitivity reactions to allergens. One can be allergic to almost anything. Right from chemicals to even ...

Allergy symptoms can very from mild to life-threatening. Learn more about allergic reactions.

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 ...

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

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