Mood disorders are a set of mental health diseases that are characterized by mood disturbances that cause severe emotional and psychological discomfort. These diseases have an overall emotional impact on a person's capacity to function in daily life. There are various forms of mood disorders, each with its own set of characteristics and diagnostic criteria. Psychotherapy, medication, lifestyle changes, and assistance from mental health specialists are common treatment choices. Individuals with mood problems can benefit greatly from early intervention and adequate treatment.