Bipolar disorder comes in a variety of types, but the primary symptom of the mental disorder is dramatic and unpredictable mood swings. Depression and euphoria, or mania, alternate, to one degree or another. But with mixed bipolar disorder, a person experiences both mania and depression simultaneously or in rapid sequence. The disorder is treatable with a combination of counseling and medication, such as mood stabilizers and antipsychotic prescription drugs. Follow the links below to find WebMD's comprehensive coverage about mixed bipolar disorder, how it is diagnosed, how it is treated, and much more.