Spring is in the Air and so are Sneezes"Achoo!" It's your child’s third sneezing fit of the morning, and as you hand another tissue you wonder if these cold-like symptoms — the sneezing, congestion, and runny nose — have something to do with the recent weather change. If these similar symptoms occur at the same time every year, you're likely right: seasonal allergies are at work. As many as 35.9 million Americans have seasonal allergies, according to the American Academy of Allergy, Asthma & Immunology.Seasonal allergi...