Demi Lovato: 'I Have Bipolar Disorder'

Demi Lovato has revealed that she’s been struggling with bipolar disorder.

The 18-year-old entertainer told People, “I never found out until I went into treatment that I was bipolar….Looking back it makes sense. There were times when I was so manic, I was writing seven songs in one night and I’d be up until 5:30 in the morning.”

After treatment, though, Demi said, “I feel like I am in control now where my whole life I wasn’t in control.”

FYI: Bipolar disorder is when people experience major – and often abrupt – mood shifts where they’ll go from having an elevated or excited mood, called “mania,” to having feelings of depression.