Our Content Affiliates Site Map Advertisement Welcome to the second week of Breathe Free, a WebMD University course covering allergies and asthma .
Hay fever is the most common allergic disease in the United States.
As many as 45 million Americans may suffer from some form of this allergy, including 10 to 30 percent of all adults and up to 40 percent of all children. That's a lot of sneezing fits, runny noses, clogged sinuses, and itchy, watery eyes. Ask him at our WebMD University message board . Although you may not be able to completely avoid all the allergens that cause your symptoms, partial avoidance may provide you with enough relief to substantially improve your quality of life. Click here for more tips on avoiding allergy triggers.