In a report from People, actress Catherine Zeta-Jones spent about five days in a mental hospital. Her representative said in a statement: “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. She’s feeling great and looking forward to starting work this week on her two upcoming films.”

Bipolar disorder, a mental illness marked by elevated or irritable moods alternating with periods of depression, afflicts about 6 million Americans. Those with bipolar II tend to have more depression, with the mood swings spread over a longer time and the “up” periods less elevated. The episodes can be triggered by major stress or life changes.