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Bipolar Disorder in Children and Teens: A brochure on bipolar disorder in children and teens that offers basic information on signs and symptoms, treatment, and finding help. Also available en EspaÃ±ol.
Bipolar disorder may result from a chemical imbalance within the brain. The brain's functions are controlled by chemicals called neurotransmitters. An imbalance in the levels of one of these neurotransmitters, such as norepinephrine, may cause bipolar disorder. When levels of this chemical are too high, mania occurs. When levels of norepinephrine drop below normal levels, a person may experience depression.