Sad is a word we use to describe someone who is feeling blue. When spelled in all caps, SAD is also an acronym for a clinical condition called Seasonal Affective Disorder. People who suffer from this condition find that their mood and outlook turns negative as the days grow shorter and colder in the winter. In the latest post to HealthConnection.TV, UT Health Northeast clinical psychologist Dr. Kathryn Wortz discusses diagnosing and treating SAD.