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 exaggerated immune response or reaction to substances that are generally not harmful.

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

Get the facts about allergic reactions, causes, allergy types (food, dust, mold, seasonal), symptoms and signs (skin rash, itching, red bumps, sneezing).

What is an Allergy? An allergy is the response of the body's immune system to a normally harmless substance, such as pollen, food, or house dust mite.

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

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 ...

Read about allergic reaction causes, treatment and prevention. Allergy symptoms and signs include swelling, hives and rashes, and severe reactions may cause anaphylaxis.

Describes how allergy tests are used, when allergy tests are ordered, and what the results of an allergy test might mean

Immunologists, as well as the general public, use the term allergy in several different ways. I shall define it thus: An allergy is a harmful immune response elicited ...

Considerations. Allergic reactions are common. The immune response that causes an allergic reaction is similar to the response that causes hay fever.

Allergy Vs. Viral Rash. The appearance of an allergic reaction and viral rash is often similar, but the cause of these rashes is entirely different. A rash is rarely ...

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 ...

Get the facts about allergic reactions, causes, allergy types (food, dust, mold, seasonal), symptoms and signs (skin rash, itching, red bumps, sneezing).

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