WATCH: Spring allergies may worsen as warmer weather arrives

Dr. Leonard Bielory, allergist and immunologist, explains what is driving seasonal allergies and how people can best manage symptoms.

​Dr. Leonard Bielory, allergist and immunologist, explains what is driving seasonal allergies and how people can best manage symptoms.  Health Dr. Leonard Bielory, allergist and immunologist, explains what is driving seasonal allergies and how people can best manage symptoms.