WebMD: Better Information. Better Health.
Skip to content
Other search tools:Symptoms|Doctors|Hospitals

Allergies Health Center

Sneezing?
Assess yourself.
Sniffling?
Safe medications for kids.
Allergies FAQ
7 most important questions.

Allergies Overview

At least one out of every 5 Americans suffers from allergies. Common causes of allergy symptoms include food allergies such as peanut allergy or milk allergy, and seasonal allergies resulting from grass, weed, tree pollen, or various molds. Cat allergies and dog allergies can also cause miserable symptoms such as itchy eyes, sneezing, nasal congestion, and wheezing. Allergic skin conditions can cause a rash and itchy skin.

Select a Chapter

Get News Updates | RSS Help Latest Headlines
Kids with Asthma Don’t Miss More School
A new study of students in Dallas inner-city schools shows that students with asthma do not miss school more than students without asthma. This marks a change from past studies.

Community & Resources

Tests &
Medications

Allergy Basics

What Are Allergies?

Allergies are an  abnormal response of the immune system. People who have allergies have  an immune system that reacts to a usually harmless substance in the environment.  This substance (pollen, mold, animal dander, etc.) is called an allergen.

Allergies are a very common problem, affecting at least 2 out of every 10 Americans.

webMD Video

click to expand/contract  Pets and Allergies

48x48_pets_and_allergies.jpg

There's a growing body of evidence that exposure to animals could be good for your child’s immune system.

Watch Video

click to expand/contract  Living with Sinusitis

click to expand/contract  Is It Allergies?

click to expand/contract  Allergies at My Age?

click to expand/contract  Special Report: Indoor Mold

Most Popular Stories