Medical Dictionary


noun de·pres·sion \di-ˈpresh-ən\

Medical Definition of DEPRESSION

:  a displacement downward or inward <depression of the jaw>
:  an act of depressing or a state of being depressed: as a (1) :  a state of feeling sad (2) :  a mood disorder marked especially by sadness, inactivity, difficulty with thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal thoughts or an attempt to commit suicide b :  a reduction in functional activity, amount, quality, or force <depression of autonomic function> <depression of red blood cells>
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