Skip to content
My WebMD Sign In, Sign Up

Allergies Health Center

Allergies Overview

Allergy symptoms include itchy eyes and skin, sneezing, nasal congestion, wheezing, and rash. Seasonal allergies result from grass, weed, tree pollen, or molds. Cat and dog dander allergies are common. Food allergies include peanut or milk.

Select a Chapter

Get News Updates | RSS Help

latest headlines

Over-the-Counter Flonase Allergy Relief Approved

The FDA has approved over-the-counter Flonase Allergy Relief, or fluticasone propionate 50 mcg nasal spray, for treatment of hay fever or upper respiratory allergies, its maker GlaxoSmithKline announced.

Seasonal Allergy Symptoms

Allergy Basics

What Is an Allergy?

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, and animal dander, for example) is called an allergen.

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

Today on WebMD

man blowing nose
Make these tweaks to your diet, home, and lifestyle.
Allergy capsule
Breathe easier with these products.
 
cat on couch
Live in harmony with your cat or dog.
Woman sneezing with tissue in meadow
Which ones affect you?
 

woman sneezing
Slideshow
Bottle of allergy capsules and daisies
Article
 
Urban blossoms
Slideshow
Woman blowing nose
Slideshow
 

Woman with itchy watery eyes
Slideshow
Allergy prick test
VIDEO
 
Man sneezing into tissue
Tools
woman with duster crinkling nose
Quiz