seasonal affective disorder
a depressive mood disorder that occurs at approximately the same time year after year and spontaneously remits at the same time each year. The most common type is winter depression and it is characterized by morning hypersomnia, low energy, increased appetite, weight gain, and a craving for carbohydrates, all of which remit in the spring.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.