Results of a new study may help improve the diagnosis and treatment of two debilitating childhood mental disorders — pediatric bipolar disorder (BD) and a syndrome called severe mood dysregulation (SMD). When the brain's electrical signals were measured during mildly frustrating situations, researchers from the National Institute of Mental Health (NIMH), of the National Institutes of Health, found a very different pattern in children with SMD, compared with children who had BD.
The results indicate that different brain mechanisms may lead to irritability in children with SMD, suggesting that they may have an illness other than BD and may require different treatments."These aren't children with the occasional bad moods you see in most kids. They're typically very ill, with symptoms that interfere with their lives in major ways. Establishing clear diagnostic criteria is an essential step toward making sure they get the help they need," said NIMH Director Thomas R. Insel, M.D.
Children have a comparatively low rate of BD, but the rate increases with age, to approximately 1 percent among adolescents. About 3 percent of pre-adolescent and adolescent youth are estimated to have SMD. Mood-stabilizing and antipsychotic medications are used to treat children with BD, although the data on their effectiveness are limited and several studies are underway. Since SMD was only recently defined, there are no systematic studies on its treatment, and children with SMD are often treated as if they have BD.
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