Demi Lovato has released five best-selling albums and a slew of hit singles. But for the 44 million American adults struggling with mental illness, it's the 24-year-old's decision to share her own mental health battles that may rank as her most meaningful achievement to date.
Bipolar disorder is characterized by intense episodes of elation or irritability and despair, with any combination of mood experiences in between, including periods of normal moods. READ MORE