(NEXSTAR) – After months of being cooped up inside for winter, it feels like it's finally starting to warm up, and spring is just around the corner. Everything is slowly turning from those drab wintry colors to bright green all around you. But as it does for so many of us, this changing of seasons also brings a runny nose, itchy eyes, and coughing.

This is due to seasonal allergies, which affect roughly 100 million people in the U.S., according to the American College of Allergy, Asthma & Immunology. But what exactly is causing these allergies?

According to the ACAAI, spring allergies typically start at the........

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