Manic depression is an illness that affects how people think, feel, and act. These people have really extreme episodes of mania (highs) and depression (lows.) It happens to about 1% of the population, both equally in men and women. When the person is going through a manic episode they have lots of energy, talk fast, jumping from topic to topic. Also, their thoughts are racing, they have a higher self-esteem, and have more enthusiasm. They also may not need as much sleep. During this time, the person feels normal and they are not aware tha ....