The family gathers around the Christmas tree.
Children gaze longingly at their still wrapped presents as carolers sing outside.
Smiles that often come with the joy of the season are on all faces, but one. For this person, Christmas doesn't bring warm, fuzzy feelings. It could be merely a case of the holiday blues or major depression, but holiday spirit has been replaced by sad melancholy. Depression, which afflicts more than 11 million Americans, including children and teen-agers each year, isn't just feeling blue. It is a medical disorder that chronically affects a person's thoughts, feelings, behaviors and physical health.