Disruptive, Impulse-Control, and Conduct Disorders
Conduct Disorder
Conduct Disorder is a repetitive and persistent pattern of behaviour that violates the basic rights of others or major age-appropriate social norms or rules. It may include aggression, deceitfulness or theft, destruction of property, and serious rule violations. One act of disobedience, one fight, or one isolated transgression is not sufficient for diagnosis.
The child or adolescent needs assessment within their family, school, social and developmental context. Victimization, bullying, abuse, learning disabilities, Attention-Deficit/Hyperactivity Disorder (ADHD), autism, mood and substance use should also be explored. A diagnosis does not mean that the future course is predetermined and is not an identity or a moral verdict.
What Is Conduct Disorder?
DSM-5-TR groups symptoms into four domains: aggression toward people and animals, destruction of property, deceitfulness or theft, and serious violations of rules. At least 3 of 15 symptoms must have occurred in the past 12 months, with at least 1 in the past 6 months. The pattern causes clinically significant impairment in social, academic, or occupational functioning. Severity reflects the number and seriousness of behaviours and the degree of harm, not merely whether disciplinary action occurred.
Possible signs and behaviours
Signs are assessed as a recurring pattern rather than isolated incidents:
- Bullying, threats, starting physical fights, using an object that can cause serious harm or physical cruelty.
- Cruelty to animals, robbery by confrontation or coercion of another person into sexual activity; such behaviours require immediate protection of the victims.
- Deliberately causing fire with intent to cause serious damage or other intentional destruction of another's property.
- Burglary, systematic lying to obtain goods or avoid obligations and theft of valuables without direct confrontation.
- Frequent staying out at night despite prohibitions before age 13, running away from home under DSM-specific conditions, or frequent unexcused absences from school before age 13.
- A drop in school attendance, conflict with peers and adults, involvement with protective or justice services and an increased risk of injury.
How It Is Diagnosed
Assessment draws on information from the child or young person, the family, and—when appropriate—the school or other services. It considers chronology, intent, context, frequency, harm, and protective factors.
- There are at least 3 of the 15 specified symptoms within 12 months and at least 1 within the last 6 months.
- The pattern causes clinically significant impairment in social, school or, where applicable, occupational functioning.
- It is determined whether the onset was in childhood, adolescence, or remains unknown, and whether severity is mild, moderate, or severe.
- A person aged 18 years or older must not meet the criteria for Antisocial Personality Disorder.
How it affects the child, the family and the school
Consequences can include suspension from school, withdrawal from friends, injuries, dangerous driving, substance use, conflicts at home and involvement with the justice system. Caregivers often feel fear, exhaustion or guilt, while siblings and peers may need their own protection. Support must hold two truths together: the child needs care and opportunities to change, and people at risk need clear boundaries and protection.
Causes, risks and protective factors
There is no single cause or "behaviour gene". Individual vulnerability, learning or self-regulation difficulties, ADHD, family conflict, inconsistent supervision, poverty, community violence and peer rejection may interact. Trauma and abuse increase risk for many problems but do not inevitably determine behaviour and should not be considered the sole explanation. A stable supportive adult, school connection, safe environment and access to early treatment are protective.
Similar or Co-occurring Conditions
The same act may have different clinical significance depending on the developmental and social context:
- Oppositional Defiant Disorder is mostly about anger, confrontation and revenge, without the same pattern of serious rights violation.
- ADHD can lead to impulsive offenses without intent to harm; it can also co-occur and require treatment.
- Depression, bipolar disorder, posttraumatic stress disorder, autism, learning disabilities and substance use can alter behaviour and require separate assessment.
- An adaptive response to a real threat, exploitation, trafficking or violent environment should not be pathologized without safety assessment.
- Pyromania involves a specific pattern of tension, fascination with fire and relief or gratification; fire-setting to cause damage in Conduct Disorder does not by itself indicate pyromania.
Treatment and Support
The most useful interventions are developmentally appropriate, multisystemic and involve the people around the child:
- Parent or caregiver training programmes that reinforce positive attention, clear rules, predictable consequences, and calm conflict resolution.
- Individual or group social problem-solving interventions for children and adolescents, with practice in recognising intentions, consequences and alternatives.
- Multimodal interventions for adolescents that coordinate family, school, community, and services, rather than relying solely on individual sessions.
- Addressing ADHD, depression, trauma, substance use and learning needs. Medications are not usually used for conduct problems alone; specific, short-term options are considered by a specialist for persistent severe aggression after psychosocial interventions.
- A safety plan and collaboration with paediatric, educational and social services, with activation of protection procedures when there is abuse, sexual coercion or serious risk.
When to Seek Help
Request an evaluation when violations are repeated, escalate, or affect school, family or safety. Do not wait for an arrest or serious injury before seeking professional help. Cruelty, sexual coercion, use of a weapon, fire-setting, running away from home or exploitation require an immediate multidisciplinary response. If the child may be a victim, protection and safe listening come before interpreting the behaviour.
Frequently Asked Questions
Is Conduct Disorder the same as "delinquency"?
No. A legal designation or a single violation is not enough. Diagnosis requires a specific repetitive pattern, duration and significant functional impact.
Does it mean the child will develop an antisocial personality?
The course is influenced by severity, co-occurring conditions, environment and timely support.
Is individual psychotherapy enough?
Usually not as a sole intervention. The best evidence-based plans involve carers and, depending on age and needs, school, community and other services.