1) Bipolar disorder 2) Cyclic disorder 3) Cyclothymic disorder 4) Manic depression 5) Manic depressive illness 6) Manic-depressive psychosis 7) Mood disorder 
Cyclothymia, also called cyclothymic disorder, is a type of chronic mood disorder widely considered to be a milder or subthreshold form of bipolar disorder. Cyclothymia is characterized by numerous mood disturbances, with periods of hypomanic symptoms alternating with periods of mild or moderate depression. An individual with cyclothymia may feel ...
A mental disorder characterised by marked swings of mood from depression to hypomania but not to the degree that occurs in bipolar disorder. ... Origin: cyclo-+ G. Thymos, rage ... (05 Mar 2000) ... 
(si″klo-thi´me-ә) cyclothymic disorder.
Type: Term Pronunciation: sī′klō-thī′mē-ă Definitions: 1. An ICD-10 classification that also includes cyclythymic and cycloid personality types. Synonyms: cyclothymic disorder
Cyclothymia: A form of bipolar disorder in which the mood swings are less severe. See also bipolar disease.
A variability of mood over days or weeks, cycling from positive to negative mood states. The variability is not as severe in amplitude or duration as to be classified as a major affective disorder.
[n] - a mild bipolar disorder that persists over a long time
cyclothymia 1. Psychiatric disorder involving mood swings. 2. A psychiatric disorder in which the patient has frequent, relatively mild mood swings, between elation and depression. Cyclothymia is a mild mood disorder which is sometimes seen as more of a personality trait than an illness. It is characterised by repetitive periods of mild depressio...
cyclothymic disorder noun a mild bipolar disorder that persists over a long time
a mild bipolar disorder characterized by instability of mood and a tendency to swing between mild euphorias and depressions.