Bipolar Disorder in Children and Teens (cont.)

What affects a child's risk of getting bipolar disorder?

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Bipolar disorder tends to run in families, so researchers are looking for genes that may increase a person's chance of developing the illness. Genes are the building blocks of heredity. They help control how the body and brain work and grow. Genes are contained inside a person's cells that are passed down from parents to children.

Children with a parent or sibling who has bipolar disorder are four to six times more likely to develop the illness, compared with children who do not have a family history of bipolar disorder. However, most children with a family history of bipolar disorder will not develop the illness.

Genetic research on bipolar disorder is being helped by advances in technology. This type of research is now much quicker and far-reaching than in the past. One example is the launch of the Bipolar Disorder Phenome Database, funded in part by NIMH. Using the database, scientists will be able to link visible signs of the disorder with genes that may influence them. So far, researchers using this database found that most people with bipolar disorder had:

  • Missed work because of their illness
  • Other illnesses at the same time, especially alcohol and/or substance abuse and panic disorders
  • Been treated or hospitalized for bipolar disorder.

The researchers also identifies certain traits that appeared to run in families, including:

  • History of psychiatric hospitalization
  • Co-occurring obsessive-compulsive disorder (OCD)
  • Age at first manic episode
  • Number and frequency of manic episodes.

Scientists continue to study these traits which may help them someday find the genes that cause bipolar disorder.

However, genes are not the only risk factor for bipolar disorder. Studies of identical twins have shown that the twin of a person with bipolar illness does not always develop the disorder. This is important because identical twins share all of the same genes. The study results suggest factors besides genes are also at work. Rather, it is likely that many different genes and a person's environment are involved. However, scientists do not yet fully understand how theses factors interact to cause bipolar disorder.

Medically Reviewed by a Doctor on 3/26/2014

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Bipolar Disorder in Children and Teens - Symptoms Question: If you are under 20, please describe the symptoms associated with your bipolar disorder.
Bipolar Disorder in Children and Teens - Risk Question: Please discuss any family history of bipolar disorder or other mental illnesses.
Bipolar Disorder in Children and Teens - Detection Question: Describe the events that led to a diagnosis of bipolar disorder in you (if you are a teen) or your child.
Bipolar Disorder in Children and Teens - Treatment Question: For parents of patients or teens: Describe the types of treatment you are receiving for bipolar disorder.

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