Health troubles continue to pour in for celebrity couple Catherine Zeta Jones and Michael Douglas. After her actor husband battled throat cancer, Catherine checked into a Connecticut clinic struggling with bipolar disorder. Bipolar disorder, which can simply be defined as Manic Depression, involves sharp mood swings and has affected a long list of celebrities in the past.

News emerged Wednesday that Catherine Zeta Jones checked into a clinic in Connecticut for five days earlier this month.

The 41-year-old Oscar winning actress reportedly sought treatment for manic depression after struggling to cope with the stress of husband Michael Douglas' battle with throat cancer.

After dealing with the stress of the past year, Catherine made the decision to check in to a mental health facility for a brief stay to treat her Bipolar II Disorder, said Catherine's publicist Cece Yorke said in a statement.

66-year-old Douglas underwent chemotherapy for stage four throat cancer last year. In January, the actor announced that he had beat the tumor with six months of intensive treatment.

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Even as Douglas' battle against cancer continues to be a fresh example for famous survivor of Cancer, Catherine Zeta-Jones' battle is bolstered by support of thousands fans and an empathic media.

Celebrity survival stories have always stood as tales of inspiration. The Welsh actress is not the first one to be associated with bipolar disorder, the mental illness is affected several stars in the past, including actors Ben Stiller, Jean-Claude Van Damme and musician Sting.

Bipolar disorder or manic-depressive disorder is a mood (or affective) disorder. It is characterized by presence of one or more episodes of abnormally elevated energy levels, cognition, and mood with or without one or more depressive episodes.

Start the slideshow to view photos and cases of famous celebrities with Bipolar Disorder: