SAD

Definition	:	Seasonal Affective Disorder
Category	:	Medical » Anatomy & Physiology
Country/Region	:	Worldwide
Popularity	:

What does SAD mean?

Seasonal affective disorder (SAD), also known as winter depression, winter blues, summer depression, summer blues, or seasonal depression, is a mood disorder in which people who have normal mental health throughout most of the year experience depressive symptoms in the winter or summer, spring or autumn year after year.