offers info on Bipolar disorder. It is a psychiatric diagnosis that describes a category of mood disorders defined by the presence of one or more episodes of abnormally . Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in a person’s mood, energy, and ability to function . Over 10 million people in America have bipolar disorder. Bipolar disorder is also known as manic-depression or manic-depressive illness . This video explains what it is, four different types, signs and symptoms, causes, diagnosis, and treatment. A comprehensive source for information about bipolar disorder, also known as manic depression. Bipolar disorder involves extreme mood swings. With proper treatment, people with bipolar disorder can lead normal lives. . Bipolar disorder, or manic depression, is a medical illness that causes extreme .