Cyclothymia (si-klo-THIGH-me-uh), also called cyclothymic disorder, is a mood disorder. Cyclothymia causes emotional ups and downs, but they're not as extreme as in bipolar disorder type I or II.
With cyclothymia, you experience periods when your mood noticeably shifts up and down from your baseline. You may feel on top of the world for a time, followed by a low period when you feel somewhat blue. Between these cyclothymic highs and lows, you may feel stable and fine.
Compared with bipolar disorder I or II, the highs and lows of cyclothymia are less extreme. Still, it's critical to seek help managing these symptoms because they increase your risk of bipolar disorder I or II. Treatment options for cyclothymia include talk therapy (psychotherapy), medications and close, ongoing follow-up with your doctor.