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Hay fever.(Causes and Treatment)(Disease/Disorder overview)
- Article from:
- Clinical Reference Systems
- Article date:
- January 1, 2006
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What is hay fever?
Hay fever is usually an allergic reaction to pollens of trees, grasses, and weeds. Sometimes it is an allergy to mold spores. Hay fever may occur any time of the year. It generally occurs in the spring, summer, or fall. Hay fever is also called seasonal allergic rhinitis.
How does it occur?
Allergic symptoms result from reactions of your body to substances that it sees as foreign. Substances that cause an allergic reaction are called allergens.
The allergens that cause hay fever are pollen and mold. They float in the air and are spread by the wind. The type of pollen in the air depends on the growing season and area ...