Answer:
Mania
Explanation:
Bipolar disorder is a type of mental illness that causes unusual shifts in mood, energy and activity levels. People who suffer from this disorder usually go from periods of extremely energized behaviour (manic episodes) to periods of lack of energy, hopelessness or sadness (depressive episodes). These "mood episodes" have an enormous impact on the lives of those who suffer from them, as they lead to changes in sleep patterns and activity levels, and unusual behaviours.
