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 allergist ...

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

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

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 pollen that ...

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.

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

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.

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

Find out what an allergy is and what are the possible treatments.

This article gives you a basic understanding of allergies and allergic reactions.

An allergy is an abnormal response by the immune system to various things in the environment. Some common factors that may cause a person to have an allergic reaction may be ...

Learn about what the most common allergy symptoms are from a board certified allergist.

What Is an Allergy Test?. Allergies are troublesome and uncomfortable. Itchy skin, watery eyes, runny nose, hives and sometimes even difficulty breathing are all symptoms of an ...

What is an Allergy? Find out how the immune system works to cause an allergy here.

The Canadian Lung Association - asthma, COPD, tuberculosis, sleep apnea, emphysema, quit smoking, air quality.