Seasonal affective disorder (SAD) is more than just a feeling of “cabin fever” or being “down” — it’s a type of depression that comes and goes with the seasons.

You may go through short periods of time where you feel sad or not like your usual self. That yearly feeling may not be a case of the "winter blues" and you don't have to deal with it alone. The symptoms of SAD can get worse and lead to problems if not treated.

Learn how to spot the common symptoms of SAD, how it’s diagnosed, and the treatment options available. Take steps to keep your mood and motivation steady throughout the year.