Depression is a state of low mood and aversion to activity, that can affect a person's thoughts, behavior, tendencies, feelings, and sense of well-being. A depressed mood is a normal temporary reaction to life events such as loss of a loved one. It is also a symptom of some physical diseases and a side effect of some drugs and medical treatments. Depressed mood is also a symptom of some mood disorders such as major depressive disorder or dysthymia.
In 1997, the President of Germany noted in a major speech that his country was dominated by a vast sense of discouragement, namely a crippling feeling hanging over the country. This manifested in the form of a loss of economic dynamism, a sense of rigidity of life, and an unbelievable mental depression. The underlying problem was however recognized to be a mental one.