title: Depression
text: # 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
  