Allergies are a major cause of illness in the United States. As many as 50 million people—about one in five—have allergies.
Allergy symptoms occur when your immune system overreacts to an allergen—something that usually is harmless, such as plant pollen, dust mites, molds, insect stings or food.Learn More
Effective treatment of allergic asthma includes identifying and avoiding allergens that trigger symptoms, using drug therapies and developing an emergency action plan for severe attacks.Learn More
Early identification of childhood allergies will improve your child’s quality of life, reduce the number of missed school days and help you avoid having to use sick time or vacation days to care for your child.Learn More
If you sneeze and cough, or your nose and eyes itch and are runny during certain times of the year, you may have seasonal allergies. Seasonal allergies, like other allergies, develop when the body’s immune system becomes sensitized and overreacts to something in the environment.Learn More
Anaphylaxis is a rare but severe allergic reaction. It can occur suddenly, can worsen quickly and can be deadly. Just because an allergic person has never had an anaphylactic reaction doesn’t mean that one won’t occur in the future.Learn More
Exposure to allergens at times when the body's defenses are weak, such as after an illness or during pregnancy, also may play a role in developing allergies. Although allergies are most common in children, they can occur at any time and any age. Sometimes allergies go away, but they also can come back years later.Learn More