Catherine Zeta-Jones Has 'No Shame' in Bipolar II DiagnosisAfter checking herself into a mental-health facility to treat her bipolar II disorder, Catherine Zeta-Jones has no qualms with the media attention surrounding her recent diagnosis.

"This is a disorder that affects millions of people and I am one of them," Zeta-Jones told PEOPLE. "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."

It was reported last week that Zeta-Jones checked into Silver Hill Hospital in New Canaan, Conn., for treatment of the disorder.

Brought on by depressive or manic bouts, a person with bipolar II disorder can still be a high-functioning individual but suffers dramatic mood changes caused by stress, anxiety or insomnia.

According to Zeta-Jones, 41, she decided to get help after "suffering silently" by husband Michael Douglas' side as he battled throat cancer. And while her husband, 66, was able to beat the disease and was declared cancer free in early 2011, his wife slipped deeper into the throws of her own disorder.