Do pollen allergies occur only in the spring?
No. Pollen grains can be dispersed into the air in the spring, summer and fall, depending on the type of tree, grass or weed. For example, ragweed is a common cause of pollen allergy reactions in the fall. In mild climates, some plants pollinate in the winter as well. Q: Why are some people allergic to pollen while others are not? A: People inherit a tendency to be allergic, meaning an increased likelihood of being allergic to one or more allergens (such as pollen), although they probably do not inherit a tendency to be allergic to any specific allergens. Children are much more likely to develop allergies if their parents have allergies, even if only one parent is allergic. Exposure to allergens at certain times when the body’s defenses are lowered or weakened, such as after a viral infection or during pregnancy, also seems to contribute to the development of allergies. Q: Which trees and grasses produce the most allergens? A: Plain-looking trees, grasses and weeds, which do not have s
