Ragweed Pollen and Fall Allergies
Most cases of hay fever are caused by allergies to ragweed.
By David Freeman
Reviewed by Brunilda Nazario, MD
Summer is ending, you’re heading into fall. But you’re still sneezing and sniffling all day and into the night. What’s going on?
Odds are you’re among the 10% to 30% of Americans who suffer from hay fever, or allergic rhinitis. And most cases of hay fever are caused by an allergy to fall pollen from plants belonging to the genus Ambrosia — more commonly known as ragweed.