Spring and Summer bring more than just pretty flowers and warm temperatures. For allergy sufferers it can be a season of misery. Dr. Nicki Nair, Allergist, Boys Town National Research Hospital, explains how allergies are developed, the common signs and symptoms of allergies, the common allergens in the spring and summer, what you can do to avoid them and when it's time to see an allergist. For more information on the Sinus Center visit, www.boystownhospital.org/patientServices/Pages/SinusCenter.aspx