Conduct Disorder (CD)
Conduct Disorder (CD; DSM-5-TR 312.81) is a disruptive behaviour disorder characterized by a repetitive and persistent pattern of behaviour in which the basic rights of others or major age-appropriate societal norms are violated. It is one of the most common reasons for child and adolescent psychiatric referral.
Overview
Conduct Disorder (CD; DSM-5-TR 312.81) is a disruptive, impulse-control, and conduct disorder characterized by a repetitive and persistent pattern of behaviour in which the basic rights of others or major age-appropriate societal norms or rules are violated. The condition involves four categories of problematic behaviour: aggression toward people and animals; destruction of property; deceitfulness or theft; serious violations of rules.
Population prevalence is approximately 4-10% of children and adolescents. Onset can be in childhood (childhood-onset type, before age 10) or adolescence (adolescent-onset type, age 10 or later). Childhood-onset CD has worse long-term prognosis; adolescent-onset CD often resolves with development. CD is more common in boys (approximately 3-4:1 in childhood-onset; closer to 1:1 in adolescent-onset).
CD is distinct from but related to Oppositional Defiant Disorder (ODD; 313.81) which involves angry/irritable mood, argumentative/defiant behaviour, and vindictiveness without the rights-violating features of CD. Many children with childhood-onset CD have prior ODD; CD progresses to Antisocial Personality Disorder (301.7) in adulthood in approximately 25-40% of cases (cannot be diagnosed before age 18).
The DSM-5-TR includes a “with limited prosocial emotions” specifier for CD presentations involving callous-unemotional traits (lack of remorse or guilt, callous lack of empathy, lack of concern about performance, shallow or deficient affect). This specifier identifies a subgroup with poorer prognosis and distinct treatment considerations.
CD is highly comorbid. ADHD co-occurs in 30-50% of cases; substance use disorders, mood disorders, anxiety disorders, learning disabilities, and trauma history are all elevated. Comorbidity affects treatment planning and outcomes.
Treatment is effective for many cases, particularly with early intervention. Multidimensional Family Therapy, Multisystemic Therapy, Parent Management Training, and treatment of comorbid conditions all have evidence. Outcomes are best when treatment is initiated early and addresses family, school, and individual factors. The condition responds to evidence-based treatment more than older clinical pessimism suggested.
Signs and symptoms
- Aggression toward people and animals — Bullying, fighting, use of weapons, physical cruelty to people or animals, robbery or extortion, forced sexual activity.
- Destruction of property — Deliberate fire-setting (causing serious damage), destruction of property by other means.
- Deceitfulness or theft — Breaking and entering, lying to obtain goods or favors or to avoid obligations, stealing items of nontrivial value without confrontation.
- Serious violations of rules — Staying out at night beyond parental prohibitions before age 13, running away from home overnight at least twice, frequent truancy beginning before age 13.
- Repetitive and persistent pattern — behaviour is not a single incident but a pattern over time, with at least 3 criteria in past 12 months and at least 1 in past 6 months.
- Callous-unemotional traits (specifier) — Lack of remorse or guilt, callous lack of empathy, lack of concern about performance, shallow or deficient affect — when present, identifies subgroup with worse prognosis.
- Functional impairment — Significant impairment in school, family, community, peer functioning; often legal involvement.
- Comorbid conditions — ADHD (30-50%), substance use disorders, mood disorders, anxiety disorders, learning disabilities, trauma history all common.
- Family system impact — Substantial family stress, parent-child relationship damage, parental mental-health impact, sibling effects.
- Trajectory differences — Childhood-onset (before age 10) has worse prognosis with higher rates of progression to ASPD; adolescent-onset often resolves with development.
Diagnostic context
The DSM-5-TR criteria for Conduct Disorder (312.81) require:
- A. A repetitive and persistent pattern of behaviour in which the basic rights of others or major age-appropriate societal norms or rules are violated, as manifested by the presence of at least 3 of 15 criteria in the past 12 months from any of the categories below, with at least 1 criterion present in the past 6 months:
- Aggression to people and animals: often bullies/threatens/intimidates; often initiates physical fights; has used a weapon that can cause serious physical harm; has been physically cruel to people; has been physically cruel to animals; has stolen while confronting a victim; has forced someone into sexual activity.
- Destruction of property: has deliberately engaged in fire setting with the intention of causing serious damage; has deliberately destroyed others’ property by other means.
- Deceitfulness or theft: has broken into someone else’s house, building, or car; often lies to obtain goods or favors or to avoid obligations; has stolen items of nontrivial value without confronting a victim.
- Serious violations of rules: often stays out at night despite parental prohibitions, beginning before age 13; has run away from home overnight at least twice while living in parental or parental surrogate home, or once without returning for a lengthy period; is often truant from school, beginning before age 13.
- B. The disturbance in behaviour causes clinically significant impairment in social, academic, or occupational functioning.
- C. If the individual is age 18 years or older, criteria are not met for antisocial personality disorder.
Specifiers: childhood-onset type (at least one criterion before age 10); adolescent-onset type (no criteria before age 10); unspecified onset. Severity: mild, moderate, severe based on number of conduct problems and harm caused. With limited prosocial emotions: 2+ of (lack of remorse or guilt; callous-lack of empathy; unconcerned about performance; shallow or deficient affect) for 12+ months across multiple relationships and settings.
Differential diagnosis includes ODD (no rights-violating behaviors), ADHD (impulsivity without intentional rule-violation pattern), depressive and bipolar disorders, intermittent explosive disorder, adjustment disorder, autism spectrum, antisocial personality disorder (age 18+).
Causes and risk factors
CD develops through interaction of multiple risk factors:
Genetic and temperamental factors: heritability of conduct problems approximately 0.40-0.60. Underlying temperamental factors include high reactivity, low effortful control, callous-unemotional traits (substantially heritable), and difficult temperament in infancy.
Family factors: parental harshness or inconsistency, parental mental illness or substance use, marital conflict, child maltreatment, parental antisocial behaviour, harsh or punitive discipline, low warmth, family disorganization, low socioeconomic status all elevate risk. Coercive family-interaction patterns are a documented mechanism.
Comorbid conditions: ADHD substantially elevates CD risk; treating comorbid ADHD often reduces CD severity. Learning disabilities, language disorders, and trauma history all contribute.
Peer factors: antisocial peer affiliation is a robust predictor; peer influence increases substantially in adolescence.
School and community factors: school disengagement, neighbourhood violence exposure, lack of community resources, poverty all elevate risk.
Trauma exposure: ACE exposure (abuse, neglect, witnessing violence) substantially elevates CD risk; some “CD” presentations in trauma-affected children are better understood as trauma-related and require trauma-focused rather than purely behavioural treatment.
Comorbidity: ADHD, substance use disorders, depression, anxiety, learning disabilities all common. CD progresses to antisocial personality disorder in ~25-40% of cases. Suicide risk is meaningfully elevated.
Callous-unemotional traits subgroup: distinct genetic, neurobiological, and developmental pathway; less responsive to standard parenting interventions; requires specialized approaches.
Typical treatments
Evidence-based treatment combines family-based, individual, and systemic approaches:
Multisystemic Therapy (MST): intensive, in-home, multi-system treatment for adolescents with serious conduct problems. Strong evidence base; reduces antisocial behaviour, juvenile justice involvement, and out-of-home placements.
Multidimensional Family Therapy (MDFT; Liddle): intensive family-based treatment for adolescents with conduct problems and substance use. Strong evidence base.
Functional Family Therapy (FFT): structured family therapy for adolescents with conduct problems. Strong evidence base.
Parent Management Training: for younger children, evidence-based parent-training programs (Parent-Child Interaction Therapy, The Incredible Years, Defiant Children, Triple P) substantially reduce conduct problems. Earlier intervention produces better outcomes.
Problem-Solving Skills Training: individual cognitive-behavioural intervention for school-age children and adolescents focused on social problem-solving deficits.
Treatment of comorbid ADHD: stimulant medication for ADHD frequently produces meaningful reduction in conduct problems when ADHD is part of the picture.
Trauma-focused therapies: when trauma history is present (very common), TF-CBT, EMDR, and other trauma-focused approaches are appropriate.
School-based interventions: coordination with schools; behavioural support plans; appropriate educational placement.
Pharmacotherapy: medication is not first-line for CD itself. Stimulants for comorbid ADHD; alpha-2 agonists (guanfacine, clonidine) for irritability and explosive behaviour; atypical antipsychotics for severe aggression unresponsive to behavioural approaches; SSRIs for comorbid depression or anxiety.
Coordination with juvenile justice: for youth involved in the justice system, coordination between mental-health and justice systems improves outcomes; restorative justice approaches show promise.
Specialized approaches for callous-unemotional traits: Reward-focused interventions emphasizing relationship-building rather than discipline tend to outperform standard parenting interventions for this subgroup. Emerging evidence base.
Outcomes: evidence-based interventions substantially reduce conduct problems; outcomes are best with early intervention, comprehensive multisystem approach, and engagement of family.
When to seek help
Professional evaluation is indicated when:
- A child or adolescent shows persistent aggressive behaviour, rule-violating behaviour, theft, deceitfulness, or destruction of property.
- School suspensions, expulsions, or police involvement have occurred.
- Family members or peers are being harmed by the behaviour.
- The child has been suspended, expelled, or facing loss of placement.
- Family functioning is severely affected.
- You suspect comorbid ADHD, learning disability, autism spectrum, depression, anxiety, substance use, or trauma history.
- Animal cruelty, fire-setting, or sexual aggression is occurring — these require immediate evaluation.
For youth: 1-800-668-6868 (Kids Help Phone). For caregivers under stress: 211 (local social services), 811 (Health Link). For mental-health crisis: 9-8-8 (Suicide Crisis Helpline). For animal cruelty concerns: contact provincial SPCA or animal welfare authorities (cruelty to animals is a significant warning sign warranting evaluation). If a child or adolescent is in immediate danger or threatening serious harm to others, contact emergency services.
Many provinces have specialized child and adolescent mental-health services for conduct problems, including intensive home-based programs, day treatment, and residential treatment for severe cases.
Frequently asked questions
Is conduct disorder just bad behaviour?
Will my child grow out of conduct disorder?
Will my child go to prison?
Is CD caused by bad parenting?
What are callous-unemotional traits?
How long does treatment take?
References
- American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.). APA.
- Henggeler, S. W., & Schaeffer, C. M. (2016). Multisystemic Therapy: Clinical overview, outcomes, and implementation research. Family Process, 55(3), 514–528.
- Frick, P. J., & Dickens, C. (2006). Current perspectives on conduct disorder. Current Psychiatry Reports, 8(1), 59–72.
- Frick, P. J., & White, S. F. (2008). Research review: The importance of callous-unemotional traits for developmental models of aggressive and antisocial behaviour. Journal of Child Psychology and Psychiatry, 49(4), 359–375.
- Eyberg, S. M., et al. (2008). Evidence-based psychosocial treatments for children and adolescents with disruptive behaviour. Journal of Clinical Child & Adolescent Psychology, 37(1), 215–237.
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ShiftGrit Psychology & Counselling is professionally regulated, certified, and recognized by leading psychology and mental-health organizations across Alberta and Canada. These associations reflect our commitment to ethical practice, clinical standards, and evidence-informed therapy through Identity-Level Therapy and Reconditioning.
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