Conduct Disorder
- Conduct Disorder (F91.1 childhood-onset, F91.2 adolescent-onset, F91.9 unspecified onset)
- Core features: A repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate societal norms or rules are violated, with at least 3 of 15 criteria in the past 12 months and at least 1 in the past 6 months, across four categories: aggression to people and animals, destruction of property, deceitfulness or theft, and serious violations of rules
- Prevalence: estimated 2-10% depending on age, gender, methodology, and population studied
- The mistake with conduct disorder is not the diagnosis itself — it is the two errors on either side. Underdiagnosing it because you are reluctant to label a child, or overdiagnosing it because you conflate defiance with rights violations. The line between ODD and CD is specific, and boards test it.
Red Flags & Key Clinical Considerations
Diagnostic Avoidance Due to Stigma
Clinicians sometimes avoid the conduct disorder diagnosis, using ODD or "behavioral problems" as softer labels even when the behavior pattern clearly crosses into rights violations. This obscures severity, delays appropriate intervention, and prevents accurate risk assessment. When the criteria are met, the diagnosis should be applied.
Childhood-Onset with Limited Prosocial Emotions
This combination represents the highest-risk subgroup within conduct disorder: more severe conduct problems, poorer treatment response, and highest risk for adult antisocial personality disorder. Early identification and intensive intervention are critical. The limited prosocial emotions specifier requires persistent callousness across settings, verified by multiple informants.
Trauma Driving the Clinical Picture
Complex trauma — particularly early relational trauma, community violence exposure, and chronic maltreatment — can produce aggression, callousness, hypervigilance, rule violations, and emotional detachment that closely mimics conduct disorder. Thorough trauma assessment should precede or accompany a CD diagnosis. Context matters: adaptive survival behavior in a dangerous environment is not the same as conduct disorder.
Comorbid Substance Use in Adolescents
Substance use disorders co-occur at very high rates in adolescent CD and substantially worsen the developmental trajectory. Screen for substance use in every adolescent CD evaluation. Integrated treatment addressing both conduct problems and substance use is essential.
Escalation of Aggression
Proactive (instrumental, planned) aggression carries different implications than reactive (impulsive, emotional) aggression. Proactive aggression is more associated with callous-unemotional traits and a worse trajectory. When aggression escalates in severity, involves weapons, or targets vulnerable individuals, safety assessment and more intensive intervention are warranted regardless of diagnostic specifics.
Related Medications
Medications commonly used in the treatment of conduct disorder:
References & Further Reading
This educational summary synthesizes information from standard clinical references for learning purposes. It is not a substitute for primary sources. Always verify against current clinical guidelines before applying any content in practice.
- American Psychiatric Association practice guidelines and current diagnostic standards (2022)
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