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date: 19 January 2021


A Dictionary of Psychology

Andrew M. Colman

depression n. 

A mood (1) state of sadness, gloom, and pessimistic ideation, with loss of interest or pleasure in normally enjoyable activities, accompanied in severe cases by anorexia and consequent weight loss, insomnia (especially middle or terminal insomnia) or hypersomnia, asthenia, feelings of worthlessness or guilt, diminished ability to think or concentrate, or recurrent thoughts of death or suicide. It appears as a symptom of many mental disorders. See depressive disorders. See also agitated depression, anaclitic depression, antidepressant, Beck Depression Inventory, Borna disease virus, cognitive therapy, depressive episode, depressive mood, depressive realism, dysthymia (1), dysthymic disorder, endogenous depression, exogenous depression, Hamilton Depression Rating Scale, inositol, involutional depression, involutional psychosis, irritable male syndrome, learned helplessness, major depressive disorder, masked depression, melancholia, mhpg, neurotic depression, nervous breakdown, noradrenalin, postpartum blues, postpartum depression, premenstrual syndrome, pseudodementia, psychomotor retardation, psychotic depression, reactive depression, reserpine, retarded depression, schizoaffective disorder, seasonal affective disorder (SAD), serotonin, unipolar depression. Compare pseudodepression. depress vb. depressive adj. [From Old French depresser to depress, from Latin depressum pressed down, from de- down + premere to press + -ion indicating an action, process, or state]