| ICD9 = | }} Dysthymia is a mood disorder that falls within the depression spectrum. It is typically characterized by a lack of enjoyment or pleasure, clinically referred to as anhedonia, that continues for an extended period. Dysthymia differs from major depression in that the former is both longer-lasting and less disabling. Dysthymia can prevent a person from functioning effectively, disrupt sleep patterns, and interfere with activities of daily living (ADLs). Many dysthymia sufferers have a more specific subtype called Atypical depression. Dysthymia sufferers exhibit fairly mild symptoms on a day-to-day basis. Over a lifetime the disorder may have more severe effects, such as a high rate of suicide, work impairment, and social isolation. The psychiatric term describing a personality with opposite characteristics to dysthymia is hyperthymia. Diagnostic criteria The Diagnostic and Statistical Manual of Menta

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