Depression

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List of terms related to Depression

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate-Editor-In-Chief: Somal Khan, M.D.

Overview

Depression generally signifies a lowering or reduction of some kind, for example in the context of mood, economy, or functionality:

Psychology and mood

• Depression (mood), a common term for a sad or low mood or emotional state, or the loss of pleasure.
• Clinical depression, or major depressive disorder, a clinical term for a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual's social functioning and/or activities of daily living. Subtypes of clinical depression:

• Melancholic depression, characterized by the inability to find pleasure in positive things combined with physical agitation, insomnia, or decreased appetite.
• Atypical depression, a common long term cyclical form of depression in which the individual can feel enjoyment, eat, and sleep, but there is significant lethargy, a 'leaden' feeling, and a strong response to rejection-related issues.
• Psychotic depression, in which clinical depression co-exists with psychotic or delusional perceptions.

• Postpartum depression, depression following childbirth, sometimes known as 'postpartum blues'.

Other medical and biological uses

• Depression (physiology), a lowering, in particular a reduction in a particular biological variable or the function of an organ, contrasted to elevation
• Depression (kinesiology), an anatomical term of motion

Other uses

• Depression (geology), a sunken geological formation
• Depression (economics), a longer-lasting and more severe economic downturn than a recession

• The Great Depression, a severe economic recession in the 1930s

• Depression (meteorology), an area of low atmospheric pressure associated with cyclones and weather fronts