Bipolar Disorder is a mood disorder characterized by extreme shifts in mood, energy, and activity levels, alternating between depressive and manic episodes. These episodes can vary in severity and duration, impacting daily functioning and relationships. The exact cause remains unknown, but it is believed to result from a combination of genetic, environmental, and neurobiological factors. Treatment often involves a combination of mood-stabilizing medications, psychotherapy, and lifestyle management to prevent relapse and improve overall stability.