Depression is a serious medical illness that negatively affects how people feel and the way they think and act.

causes feelings of sadness and/or a loss of interest or energy for activities people once enjoyed.

In the sleep pattern and appetite, difficulties with concentrating and thoughts of death can also be present.

Can lead to a variety of emotional and physical problems and can decrease the ability to function at work and at home. Feelings of worthlessness and self-loathing are also common.

Can affect anyone — even a person who appears to live in relatively ideal circumstances.