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.