What Causes Fall Allergies? Ragweed is the biggest allergy trigger in the fall. Though it usually starts to release pollen with cool nights and warm days in August, it can last into September and October. About 75 of people allergic to spring plants also have reactions to ragweed..
Fall Pollen Allergies. Weed pollen is the main cause of hay fever allergic rhinitis during the late summer and early fall months. Depending on where you live in North America, the main allergen concerns include Ragweed.
ARA As most allergy sufferers will tell you, allergy symptoms can always be bothersome, turning any time of year into sneezing season. A runny nose, itchy eyes and scratchy throat can arise as the days get shorter and the leaves begin to change..
When it comes to seasonal allergies, most people immediately think of the pollen explosion in the springtime. But an itchy throat, teary and red eyes, sniffles, and sneezing aren’t relegated to April and May alone. When the leaves start to fall and the air cools, a host of allergens can cause the same set of symptoms..
Fall Allergies Ragweed. One of the main contributors to fall allergies is the ragweed plant. A single plant can produce one billion pollen grains per season. Ragweed grows abundantly throughout the South, North, and Midwest, and its lightweight pollen grains can travel up to 400 miles in the wind..