I think I have seasonal affective disorder. How do I know for sure?
Seasonal affective disorder (SAD), more commonly known as “the winter blues,” is a type of depression that impacts about two to three per cent of the general population. Many of us find that our mood and energy levels are affected by the weather: Warmer, sunnier days tend to lift our moods, while cold, rainy, dark days can make us feel gloomier. For a certain percentage of people, the weather (and in particular seasonal variations in light that come along with shorter days) has a more significant impact and can lead to the development of a particular subtype of clinical depression.