Cyclothymia
Cyclothymic disorder is a mild form of bipolar disorder in which a person has mood swings from mild or moderate depression to euphoria and excitement, but stays connected to reality.
The cause of cyclothymic disorder is unknown. Although the changes in mood are irregular and quick, the mood swings are far less severe than in bipolar disorder (manic depressive illness). Unlike in bipolar disorder, periods of hypomania often do not become actual mania.
See also: Bipolar disorder
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