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Further Evidence for a Developmental Subtype of Bipolar Disorder Defined by Age at Onset: Results From the National Epidemiologic Survey on Alcohol and Related Conditions

OBJECTIVE: This study examines the relationship between age at onset of bipolar I disorder and illness characteristics among adults in a community sample. METHOD: The National Epidemiologic Survey on Alcohol and Related Conditions identified 1,411 adults with bipolar disorder. For analyses, bipolar disorder subjects were divided into three age at onset groups: childhood (less than 13 years old, N=113), adolescence (13–18 years old, N=339), and adulthood (19 years or older, N=959). RESULTS: Nonremitting bipolar disorder was most prevalent among childhood-onset subjects, and childhood-onset subjects were most likely to experience prolonged episodes. Antisocial personality disorder was most prevalent among childhood-onset subjects. Drug use disorders were more prevalent among childhood-onset and adolescent-onset, as compared with adult-onset, subjects. Prevalence of mixed episodes or irritability did not differ significantly between groups. CONCLUSIONS: Findings corroborate clinical studies: illness characteristics among adults with childhood-onset bipolar disorder are similar to those described in children with bipolar disorder.

This article has been cited by other articles:

				B. Birmaher, D. Axelson, B. Goldstein, M. Strober, M. K. Gill,, J. Hunt, P. Houck, W. Ha, S. Iyengar, E. Kim, et al. Four-Year Longitudinal Course of Children and Adolescents With Bipolar Spectrum Disorders: The Course and Outcome of Bipolar Youth (COBY) Study Am J Psychiatry, July 1, 2009; 166(7): 795 - 804. [Abstract] [Full Text] [PDF]

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