We'll turn to the breaking story on catherine zeta-jones. She has checked herself into a treatment center to deal with an ongoing battle with bipolar disorder. Abc's diana perez has the story.... See More
We'll turn to the breaking story on catherine zeta-jones. She has checked herself into a treatment center to deal with an ongoing battle with bipolar disorder. Abc's diana perez has the story. Reporter: Catherine zeta-jones is known for being the picture of grace while tackling personal issues head on and overnight abc news has learned that the academy award-winning actress battling bipolar ii disorder for years has checked herself into a health care facility for treatment. Her representatives telling abc news that the megastar and mother of two is, quote, being proactive. Previously catherine has said she is committed to periodic care to manage her health in an optimum manner. Last december she spoke to elizabeth vargas about her apprehensions on speaking out publicly. I never wanted to be the poster child for this and i never wanted this to come out publicly. It came out. And so I dealt with it in the best way I could. And that was just saying that, look, hey, I'm bipolar. Reporter: This is not the first time zeta-jones sought help for the disorder and reportedly previously checked into a facility for 30 days. Stress can be a trigger for bipolar disorder, mental illness characterized by mood swings of depression and elation. Bipolar ii which zeta-jones has is said to involve lower and longer low periods. Stress can be a factor. It's been reported that catherine zeta-jones had always scheduled this time to return to treatment because she's between projects and it's convenient. Reporter: Actor bradley cooper brought attention to the disorder in last year's oscar winning film, "silver linings playbook" by playing a bipolar character. Approximately 6 million people suffer from the disease. And zeta-jones has been busy promoting two films alone this year along with doing a song and dance at this year's oscars. For "good morning america," diana perez, abc news, new york. We're thinking of her and wish her all the best?
This transcript has been automatically generated and may not be 100% accurate.