Allergy Facts

An allergic reaction is caused when the immune system mistakenly identifies a normally harmless substance as damaging to the body. Understand the Spectrum of Allergic Reactions ›

Symptoms of Allergy

Seasonal allergies and colds have similar symptoms but some important differences. The following information can help you determine if you're suffering from allergies or a cold.

Read More to Learn About Allergy Symptoms

What are the Different Types of Food Allergies

Have you ever experienced unpleasant symptoms shortly after a meal? It could be a food allergy or food intolerance. Symptoms of both are similar. But how do you know when it is serious?

Learn More About the Tests That Diagnose Food Allergy and Intolerances

Types of Allergic Reactions: Rashes to Anaphylaxis

Allergic reactions come in many forms, from a mild itch to a life-threatening reaction called anaphylaxis. How can the same substance cause a rash in one person and swelling of the airways in another?

Read on to Learn More About the Different Types of Allergic Reactions

Common Allergies in Children

When children develop skin, nasal, or food allergies it can impact his or her quality of life as well as the people who care for them. To keep things under control take care to avoid allergy triggers.

Learn More About the Types of Allergies That Affect Children

Living With Allergies

For someone who has an allergy, a substance that is harmless to most people causes their immune system to react and cause symptoms that can range from annoying to life threatening. The substance that causes the body's immune system to react this way is called an allergen.

How to Allergy-Proof Your Home

Cough: Cold or Allergy?

It is very likely that there was a time you had a lingering cough, but the cause may have eluded you. Instead of a cold, your cough may have been caused by an allergy. There are key differences that can help you tell them apart.

Find Out How to Tell the Cause of Your cough

Tests Used to Diagnose Allergies

If you have runny nose, itching, rashes, or wheezing caused by allergies you probably want to know what allergens you should avoid so you can start to feel better. Some think that allergy tests give you the answer.

Read More About the Types of Tests Used to Diagnose Allergies

What is Allergic Dermatitis?

Atopic dermatitis, also called eczema, is a hereditary and chronic skin disorder that mostly affects infants or very young children, and may last until the child reaches adolescence or adulthood. Eczema causes the skin to itch, turn red, and flake.

Read More About Skin Allergy Eczema

Your Guide to Allergies


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Which one of the following is not among the most common food allergens?

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