The weather changes but you don't have to. -Lona Weather Changes and Depression Seasonal Affective Disorder (SAD) is a type of depression that's related to the changes in the season. Symptoms may appear during fall or early winter and don't disappear until the sun starts shining. This used to be called 'cabin fever' or 'winter blues.' Here are options you can try if you start feeling lethargic due to weather changes. Light therapy boxes can offer an effective treatment. This