Some people become very happy and sociable or make impulsive decisions such as spending a lot of money. They may also experience physical complaints, struggle to concentrate, and feel unable to work or go to school.ĭuring a manic episode, a person may feel very energetic. Share on Pinterest Oleksandra Korobova/Getty Imagesīipolar disorder refers to a group of conditions that cause unusual shifts in a person’s:ĭuring depressive episodes, a person may feel sad, worthless, hopeless, guilty, or alone.