Everyone feels depressed from time to time. But not everyone has depression. Depression, also referred to as major depressive disorder or clinical depression, is a condition that can cause severe ...

The core experiences of depression – changes in energy, activity, thinking and mood – have been described for more than 10,000 years. The word “depression” has been used for about 350 years. Given ...

A new study that measured brain activity in 263 people with depression suggests the diagnosis we give everyone might be covering five different conditions.