Bipolar Disorder is also known as manic depressive illness or manic depression. It is brain disorder that causes unusual shifts in mood, energy, activity level and ability
These are categorized into four basic types all of them involve clear changes in mood. These mood swings are extremely change from periods like "up", elated and energized behavior (known as manic episodes) to very sad, "down" or hopeless periods (known as depressive periods). Rare manic periods are known as hypomanic episodes.
