Conduct Disorder as classified in the DSM IV TR is a Disruptive Behavioural Disorder observed often in teenagers. Children repeatedly violate age appropriate social rules, often violate others rights too.
Clinical Manifestations include;
Aggression toward people or animals: Repeated physical fights and bulling other children. Intimidate other or even carry knives and weapons to school. Extreme cases involve history of crimes like violence, rape and extortion.
Destruction of property: Intentionally vandalizing property, to the extent of setting them on fire.
Deceitfulness: Breaking rules by lying or stealing from others. Shoplifting from malls or other outlets for minor things, often also from friends or relatives home. Some children may actually impersonate other or may lie to obtain something for nothing. Delinquent behaviours like breaking into house/car or store is seen in extreme cases.
Violations of social rules: Saying out late without parental consent, bunking school form the hallmark of these children before 13 years of age. Often referred to as truancy and vagrancy. Running away from home on multiple occasions.
The above symptoms are serious in nature and are often manifested in later childhood or early adolescence. Rarely do the begin after the age of 16yrs. Treatment is effective and most children progress into normal adulthood.
Untreated most of these cases progress into adulthood and manifest either as antisocial behaviour or antisocial personality disorders. Most of them will have difficulties with the law or have lifelong social adjustment problems. Long term therapy and Medications provide good support to such cases.