About a quarter of Americans suffer from seasonal allergies. In most people, seasonal allergies occur when the body overreacts to pollen in the spring or fall. If this is you, your body mistakes pollen for germs when you breathe in these particles. Your immune system responds by releasing chemicals called histamines to clear the allergens out, and those chemicals cause allergy symptoms such as sneezing, sinus congestion, runny nose, watery eyes, itchy throat, and others. If you want to avoid being miserable all season long, follow these tips to keep seasonal allergies at bay.