Allergy and asthma are among the most common health problems. Asthma itself affects more that 20 million Americans. More than 60 million Americans are afflicted with asthma, seasonal hay fever, or other allergy-related conditions each year.

Some allergies, such as a mild case of hay fever, may not require any treatment or may be controlled with the occasional use of over-the-counter medications.

Others may interfere with your day-to-day activities, lower your quality of life, or even become life-threatening. In these cases, you should see a health care provider to help you manage allergies and their symptoms.