- A type of depression involving long-term, chronic symptoms that are not disabling, but keep a person from functioning at "full steam" or from feeling good. Dysthymia is a less severe type of depression than what is accorded the diagnosis of major depression. However, people with dysthymia may also sometimes experience major depressive episodes, suggesting that there is a continuum between dysthymia and major depression.
* * *A chronic mood disorder manifested as depression for most of the day, more days than not, accompanied by some of the following symptoms: poor appetite or overeating, insomnia or hypersomnia, low energy or fatigue, low self-esteem, poor concentration, difficulty making decisions, and feelings of hopelessness. See mood disorders, under disorder, endogenous depression, exogenous depression. [dys- + G. thymos, mind, emotion]
* * *dys·thy·mia dis-'thī-mē-ə n a mood disorder characterized by chronic mildly depressed or irritable mood often accompanied by other symptoms (as eating and sleeping disturbances, fatigue, and poor self-esteem) called also dysthymic disorder
* * *dys·thy·mia (dis-thiґme-ə) [dys- + Gr. thymos mind] dysthymic disorder.
Medical dictionary. 2011.