What's Causing Your 'Seasonal Funk?'

As the season changes and the sky gets darker some may experience a noticeable change in mood. Your case of the "winter blues" may actually be a type of depression called seasonal affective disorder (also called SAD). Dr. Travis Stork of The Doctors and Pfizer Chief Medical Officer, Dr. Freda Lewis-Hall break down the symptoms of seasonal affective disorder and ways you can treat your seasonal funk.