Most people feel sad or irritable from time to time. They may say they\'re in a bad mood. A mood disorder is different. It affects a person\'s everyday emotional state. Nearly one in ten people aged 18 and older have mood disorders. These include depression and bipolar disorder (also called manic depression).
Mood disorders can increase a person\'s risk for heart disease, diabetes, and other diseases. Treatments include medication, psychotherapy, or a combination of both. With treatment, most people with mood disorders can lead productive lives.