Cyclothymic Disorder

Cyclotymic disorder is a less extreme form of bipolar, sometimes referred to as “bipolar lite”, “that nevertheless chronically interferes with your life. It involves multiple episodes of hypomania and depressive symptoms, which don´t meet criteria for mania or major depression in intensity or duration.
Your symptoms must last for at least two years without go on to develop a full-blown manic mixed, or depressive episode, leading to an additional diagnosis of Bipolar I or II. Preventive measures like therapy, lifestyle changes, and medication can make a difference in the course of Cyclotymic disorder.

Source: Bipolar Disorder, Camila Flink, MD , Joe krainak