Cyclothymia (pronounced / sa kl a mi , s kl -/) is a mood disorder and a form of bipolar disorder. It is defined in the bipolar spectrum. Specifically, this disorder is a milder form of bipolar II disorder consisting of recurrent mood disturbances between hypomania and dysthymic mood. A single episode of hypomania is sufficient to diagnose cyclothymic disorder, however, most individuals also have dysthymic periods. The diagnosis of cyclothymic disorder is never made when there is a history of mania or major depressive episode or mixed episode. The lifetime prevalence of cyclothymic disorder is 0.4-1%. The rate appears equal in men and women, though women more often seek treatment.
In the context of mental disorder, a mixed state (also known as dysphoric mania, agitated depression, or a mixed episode) is a condition during which symptoms of mania and depression occur simultaneously (e.g., agitation, anxiety, fatigue, guilt, impulsiveness, irritability, morbid or suicidal ideation, panic, paranoia, pressured speech and rage). Typical examples include tearfulness during a manic episode or racing thoughts during a depressive episode. One may also feel incredibly frustrated in this state, since one may feel like a failure and at the same time have a flight of ideas. Mixed states are often the most dangerous period of mood disorders, during which substance abuse, panic disorder, suicide attempts, and other complications increase greatly.