When a person suffers from bipolar disorder, he or she experiences mood swings that can range from severe depression to manic episodes.

Bipolar Disorder

A psychological disorder marked by severe fluctuations in mood, ranging from manic or hypomanic states to depressive episodes.

Manic Episodes

Periods of abnormally elevated mood and high energy, often associated with bipolar disorder. Symptoms include inflated self-esteem, decreased need for sleep, and increased talkativeness.