If you're sensitive to pollen, you might notice that your allergies are particularly bad right now. You're not alone, medical experts say. There are three periods every year when different types ...

May sees an overlap between tree and grass pollen, which leads to "particularly high overall pollen loads, making it a notoriously difficult month for many allergy sufferers across the U.S.," Wada ...

Some of the most common tree pollens that cause allergies include birch, cedar, cottonwood, maple, elm, oak and walnut, according to the Asthma and Allergy Foundation of America. Grasses that ...

There are three periods every year when different types of pollen reach their peak. The spring (roughly March through May or ...

That's how challenging it can be for scientists to distinguish the tiny powdery pollen grains produced by fir, spruce and pine trees ... bringing big relief to allergy sufferers.

That's how challenging it can be for scientists to distinguish the tiny powdery pollen grains ... big relief to allergy sufferers. "With more detailed data on which tree species are most ...