Study documents rapid increase in youth bipolar disorder...( CHICAGO The estimated number of you...),Health

CHICAGO The estimated number of youth with office visits with a diagnosis of bipolar disorder substantially increased between 1994 and 2003, while adult visits with a bipolar disorder diagnoses appeared to almost double, according to a report in the September issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

Bipolar disorder is a psychiatric illness that typically involves periods of mania (an abnormally elevated mood) and depression. Although bipolar disorder may have its onset during childhood, little is known about national trends in the diagnosis and management of bipolar disorder in young people, the authors write as background information in the article.

Carmen Moreno, M.D., of the Hospital General Universitario Gregorio Maranon, Servicio de Psiquiatria, Madrid, Spain, and colleagues analyzed data from a national survey of office-based physicians designed to represent all such clinicians in the United States. The physicians provided information about demographic, clinical and treatment aspects of each patient visit for a one-week time period. The researchers compared the rate of growth in bipolar disorder diagnoses among individuals age 19 and under to that of individuals age 20 and older from 1994 to 1995 through 2002 to 2003. They also compared demographic information and prescribed treatments between the two groups during the years 1999 to 2003.

The annual number of office-based visits with a diagnosis of bipolar disorder in youth was estimated to increase from 25 per 100,000 youth in 1994 to 1995 to 1,003 per 100,000 youth in 2002 to 2003. In the same time, outpatient visits with a diagnosis of bipolar disorder in adults increased from 905 to 1,679 per 100,000 population. As a percentage of total office-based visits, visits with a diagnosis of bipolar disorder increased among youth from 0.01 percent (1994 to 1995) to 0.44 percent (2002 to 2003), and among adults, from 0.31 percent to 0.5 percent in
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