The correct answer is bipolar disorder.
Bipolar disorder, also called manic depression, is a mental health condition that causes extreme mood swings and behavioral changes.
The disorder is characterized by two phases: the emotional heights (mania) and the emotional laws (depression).
During the emotional heights, a person has increased energy, is optimistic and very active. The person has an exaggerated sense of self-confidence and experiences extreme well being.
During the depressive stage, a person lacks energy and inspiration, has trouble concentrating and it's prone to negative thoughts and actions.
