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Manic-depressive illness, or bipolar disorder, is a psychiatric disorder and brain disease is characterized by severe mood swings, from mania to depression. Bipolar Disorder is a biological disease of the brain. It is caused by a chemical imbalance. It affects mo ....

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.... can send a person plunging from a high state, where one may believe one has superhuman energy and abilities, into a pit of despair, where it may seem as if the only way out is suicide. There are two types of bipolar, bipolar 1 and bipolar 2. Bipolar 1 is diagnosed differently than bipolar 2. Bipolar I is diagnosed when person has a manic episode and has had no depressive episodes in the past. However, after the first manic episode occurs, depressive episodes often follow. Most people (over 90%) with Bipolar I experience two or more manic episodes in their lifetimes. (site.health-center.com/brain/bipolar/basics.htm). People with Bipolar II have depre ....