Also called manic-depression, bipolar is characterized by episodes of depression alternating with, or overlaid by, symptoms of mania. Mania is characterized by intense feelings of well-being, elation, and exuberance often coupled with irritability or overt hostility. While lithium is the mainstay therapy, antidepressants, antipsychotics, and anticonvulsants are often prescribed. Several new treatments are in development...