Bipolar disorder, also known as manic-depressive illness, is a mental health condition characterized by extreme shifts in mood, energy, and activity levels. Individuals with bipolar disorder experience episodes of mania, which are periods of high energy, euphoria, and sometimes irritability or impulsivity, and episodes of depression, which are periods of low mood, lack of energy, and feelings of hopelessness or sadness.

Bipolar disorder can be treated with medication, therapy, and lifestyle changes. With appropriate treatment, those individuals suffering from bipolar disorder can manage their symptoms and lead fulfilling lives.