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A mental disorder characterized by marked swings of mood from depression to hypomania but not to the degree that occurs in bipolar disorder. SYN: cyclothymic disorder. [cyclo- + G. thymos, rage]
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cy·clo·thy·mia .sī-klə-'thī-mē-ə n a cyclothymic mood disorder
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n.
the occurrence of marked swings of mood from cheerfulness to misery. These fluctuations are not as great as those of manic-depressive psychosis. They usually represent a personality disorder, for which psychotherapy is sometimes helpful.
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cy·clo·thy·mia (si″klo-thiґme-ə) [cyclo- + -thymia] cyclothymic disorder.Medical dictionary. 2011.