Most everyone has an idea of what allergies are, but an allergist's definition of an allergy is quite different. Dr. Daniel More, a board-certified ...

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 ...

Brief and Straightforward Guide: What is an Allergy? ... An allergy is an immune system response to a substance the body perceives as harmful.

An allergy is an overcompensation of the body’s immune system when confronted with the protein of a food, a drug (such as penicillin), a bee sting or an airborne ...

AAAAI, the experts in allergy and immunology, provide an overview of allergic reactions.

Discover the facts about allergies, including the common causes and symptoms, why it’s thought they’re becoming more common.

The term allergy is used to describe a response, within the body, to a substance, which is not necessarily harmful in itself, but results in an immune response and a ...

An allergy is an exaggerated immune response or reaction to substances that are generally not harmful. Allergies are pretty common. Both genes and ...

Causes, incidence, and risk factors. Allergies are pretty common. Both genes and environmental factors play a role. The immune system normally protects the ...

Send an eCard The summary of the U.S. food allergy guidelines for patients, families, and caregivers

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 ...

WebMD: Understand your allergies and symptoms from experts and get everyday advise from those who suffer with you.

Many times people experience allergic reactions, yet are unsure exactly what they are allergic to. An allergy scratch test exposes a person to small amounts of common ...

I had an incident happen in a restaurant and I'm wondering if this is an allergy. I have no history of food allergy that I know of. We went out for supper in a ...

Allergies are troublesome and uncomfortable. Itchy skin, watery eyes, runny nose, hives and sometimes even difficulty breathing are all symptoms of an allergic ...

An overview of allergies: symptoms, diagnosis, treatment and management written and reviewed by leading experts in allergy, asthma and immunology.