Bipolar mood disorder which used to be called manic depression is a psychotic mood disorder that affects mood, thinking, and behavior. It is characterized by recurrent swings between mania and depression, this is why has often referred to as manic-depressive psychosis. The dramatic shift in mood, emotions, and energy level which usually moves from extreme low mood and extreme high mood doesn’t happen moment to moment, they usually happen over several days to weeks. The mood is not stable during an episode as a result it is difficult to treat because of continuous cyclical or mood shifting.