Which of the following are considered the most common types of allergens?

A.         Yeast, barley and rye

B.         Molds and pollen

C.         Fish and shellfish

D.         Nickel and latex

E.         Cosmetics and medications

The correct answer is (B) Molds and pollen.

Airborne allergens such as molds and pollen are considered the most common types of allergens.  The American Academy of Allergy, Asthma and Immunology estimates that 35.9 million people in the United States have seasonal hay fever (allergic rhinitis).  Given off seasonally by trees, grass and weeds, pollen is responsible for triggering most cases of hay fever.  The ragweed plant is most commonly associated with pollen allergies.  Mold is often found where the humidity is high, and can easily become airborne and trigger cases of allergic rhinitis year-round.