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Ann Clin Psychiatry. 2007 Jul-Sep;19(3):161-8.

Conduct disorder subtype and comorbidity.

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  • 1Division of Child & Adolescent Psychiatry, University of Connecticut Health Center, Farmington, CT 06030-1410, USA.



Conduct disorder is considered difficult to treat, but comorbid psychiatric disorders may be a basis for treating some youths with conduct disorder. We sought to identify patterns of comorbid psychiatric diagnoses and psychopathology associated with conduct disorder by reported age-of-onset.


Referred children and adolescents, aged 4-17 years old, were clinically evaluated. Ages of onset of CD symptoms (N=53) were ascertained and divided according to DSM-IV criteria as childhood onset (<10 years old) or adolescent onset (>or=10 years old).


Childhood-onset conduct disorder was associated with higher rates of ADHD and anxiety disorders, male gender, and perceived and total hostility scores than adolescent-onset conduct disorder. Adolescent-onset was associated with higher rates of PTSD, alcohol and substance use disorders, complex comorbidity (i.e., 6+ diagnoses lifetime), and female gender.


Understanding age-of-onset-related patterns of comorbidity may facilitate psychiatric treatment planning in children and adolescents with conduct disorder.

[PubMed - indexed for MEDLINE]
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