Journal Title:  Annals of Clinical Psychiatry | Vol:  19 | Issue:  3 | Year:  2007   
Print ISSN:  1040-1237 | Online ISSN:  1547-3325   

Conduct Disorder Subtype and Comorbidity

Daniel F. Connor MD
Julian D. Ford PhD
David B. Albert PhD
Leonard A. Doerfler PhD

pages: 161 - 168
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Abstract:

Background. 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.

Methods. 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 (≥ 10 years old).

Results. 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.

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