CHICAGO, April 29 (UPI) -- The itchy, watery eyes, congestion, post-nasal drip and sneezing of allergies begin earlier and end later, and some blame global warming, a U.S. expert says.
Dr. Anju Peters, an allergist at Northwestern Memorial Hospital and associate professor in medicine-allergy-immunology at Northwestern University Feinberg School of Medicine, said when allergy sufferers get pollen in the nose the immune system kicks into overdrive causing the body to release histamine and other substances that cause spring allergy symptoms.