zeta-jones-bipolar-230.jpgOn Monday Catherine Zeta-Jones checked in to a treatment center for help in dealing with bipolar disorder, reports TMZ.

Zeta-Jones is scheduled to complete a 30-day program, and this is not the first time the 43-year-old actress has sought treatment for her condition. In April of 2011 she checked in to Silver Hill Hospital in New Canaan, Connecticut around the time her husband Michael Douglas was diagnosed with cancer for a "brief stay," according to her rep.

Shortly after that the Oscar winner opened up to People magazine about her struggles and said, "This is a disorder that affects millions of people and I am one of them. If my revelation of having bipolar II has encouraged one person to seek help, then it is worth it. There is no need to suffer silently and there is no shame in seeking help."

Zeta-Jones was last seen in public on April 22 with Douglas at the 40th Anniversary Chaplin Award Gala at the Lincoln Center in New York City.