16 Celebrities with Chronic Illnesses

Catherine Zeta-Jones

Bipolar disorder

Catherine Zeta-Jones has been diagnosed with bipolar II disorder, which is classified by longer low periods. The actress's illness, which can be triggered by stress, came to a head when her husband Michael Douglas was battling stage IV throat cancer. In 2011, Zeta-Jones checked into a mental health facility. "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," her publicist Cece Yorke said in a statement.