Depression
# Depression

Depression may refer to:

## Mental health

* Depression (mood), a state of low mood and aversion to activity
* Mood disorders characterized by depression are commonly referred to as simply depression, including:
   * Bipolar disorder, also known as manic depression
   * Dysthymia, also known as persistent depressive disorder
   * Major depressive disorder, also known as clinical depression

## Economics

* Economic depression, a sustained, long-term downturn in economic activity in one or more economies
   * Great Depression, a severe economic depression during the 1930s, commonly referred to as simply the Depression
   * Long Depression, an economic depression during 1873–96, known at the time as the Great Depression

## Biology

* Depression (kinesiology), an anatomical term of motion, refers to downward movement, the opposite of elevation
* Depression (physiology), a reduction in a biological variable or the function of an organ
* Central nervous system depression, physiological depression of the central nervous system that can result in loss of consciousness

## Earth science

* Depression (geology), a landform sunken or depressed below the surrounding area
* Depression (weather), an area of low atmospheric pressure characterized by rain and unstable weather
