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February 9, 2012

Bipolar Disorder (cont.)

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What are the types of bipolar disorder?

Bipolar disorder has a number of types, including bipolar type I and bipolar type II disorder. Depending on how rapidly the mood swings occur, the episodes of bipolar disorder can also be classified as mixed or rapid cycling. For every type and duration of the illness, the sufferer experiences significant problems with his or her functioning at school, at work, or socially, may require hospitalization, or may have psychotic symptoms (for example, delusions or hallucinations). The diagnosis of bipolar I disorder requires that the individual has at least one manic episode but does not require a history of major depression. Bipolar II disorder is diagnosed if the person has experienced at least one episode of major depression and at least one hypomanic (a milder form of mania) episode.

A mixed episode is defined as a period of time in which both the criteria to diagnose a major depressive episode and a manic episode are fully met, except for the duration requirements of each. The mood problem (manic alternating with depressive symptoms) takes place nearly every day for a total of at least a week.

What are bipolar disorder causes and risk factors?

One frequently asked question about bipolar disorder is if it is hereditary. As with most other mental disorders, bipolar disorder is not directly passed from one generation to another genetically. Rather, it is the result of a complex group of genetic, psychological, and environmental factors. Genetically, bipolar disorder and schizophrenia have much in common, in that the two disorders share a number of the same risk genes. However, the fact is that both illnesses also have some genetic factors that are unique.

Stress has been found to be a significant contributor to the development of most mental illnesses, including bipolar disorder. For example, gay, lesbian, and bisexual people are thought to experience increased emotional struggles associated with the multiple social stressors associated with coping with reactions to their homosexuality or bisexuality in society.


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