Final answer:
A milder pattern of mood swings that includes depressive and manic episodes but is not as severe as bipolar disorder is known as cyclothymic disorder, which affects individuals but can be treated with psychotherapy and medication.
Step-by-step explanation:
A milder pattern of mood swings that does not reach the severity of bipolar disorder but does include depressive and manic episodes has been identified as cyclothymic disorder. This condition is characterized by fluctuations between milder depressive episodes and hypomanic episodes, which are less severe than the full manic episodes associated with bipolar disorder. Although mood swings are not as extreme, cyclothymic disorder can still significantly affect an individual's life and would benefit from treatment.
According to the National Institute of Mental Health, mood disorders are among the most common mental disorders in the United States, affecting a significant portion of the population. Treatment for such disorders may include psychotherapy, medication, or a combination of the two. It is important for those experiencing symptoms of a mood disorder to seek professional help for diagnosis and to develop an appropriate treatment plan.