A brain rhythm working in tandem with the body's natural sleep-wake cycle may explain why bipolar patients alternate between ...

New research suggests that mood swings in bipolar disorder are regulated by two clocks: the body’s 24-hour circadian rhythm ...

This is accomplished by using functional impairment criteria, arising from mood dysregulation as ... treatment response in woman with bipolar II disorder. Chart illustrates illness progression ...

People with bipolar disorder may be at a higher risk of developing premenstrual dysphoric disorder (PMDD), but neither condition directly causes the other.

Without treatment, bipolar disorder may cause mood episodes. People may alternate between high periods, known as manic episodes, and low periods, or depressive episodes. During a manic episode ...