January 25, 2012 7:16 pm Why Winter Hives? Dr. Jackie Eghrari-Sabet, of Family Allergy & Asthma Care in Gaithersburg, Md., explains why some people get hives in winter and what they can do about them. Local 2:14 Opioid crisis: National drug take back day on Saturday 2:55 Concussion treatment: Returning to school and limiting screen time may help, study finds 2:39 What to know about ADHD medication and pregnancy 2:08 How to pick the best running shoes for outdoor exercise 3:41 Nail biting: A psychiatrist shares tips