Lovato, who has been candid about her journey with addiction, sought treatment in a rehab facility in 2010, where she was diagnosed with bipolar disorder.
Inactive on social media since July 24, when police responded to a call from her Hollywood Hills home and she was hospitalized, the star broke her silence on Sunday, addressing her fans in an emotional letter posted to Instagram.
“I have always been transparent about my journey with addiction. What I’ve learned is that this illness is not something that disappears or fades with time. It is something I must continue to overcome and have not done yet,” she wrote.
She thanked her family, team and the staff at Cedars-Sinai, and she vowed to her followers that she will keep fighting.