Aggression to people and animals
Often bullies, threatens or intimidates others
Often initiates physical fights
Has used a weapon that can cause serious physical harm to others (e.g., a bat, brick, broken bottle, knife, gun)
Has been physically cruel to people
Has been physically cruel to animals
Has stolen while confronting a victim (e.g., mugging, purse snatching, extortion, armed robbery)
Has forced someone into sexual activity (rape or molestation)
Feels no remorse or empathy towards the harm, fear, or pain they may have inflicted on others

Destruction of property
Has deliberately engaged in fire setting with the intention of causing serious damage
Has deliberately destroyed others property (other than by fire setting)

Deceitfulness or theft
Has broken into someone elses house, building, or car
Often lies to obtain goods or favors or to avoid obligations (i.e., "cons" others)
Has stolen items of nontrivial value without confronting a victim (e.g., shoplifting, but without breaking and entering; forgery)

Serious violations of rules
Often stays out at night despite parental prohibitions, beginning before age 13 years
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 yearsThe lack of empathy these individuals have and the aggression that accompanies this carelessness for the consequences is dangerous- not only for the individual but for those around them. Developmental course
Currently, two possible developmental courses are thought to lead to conduct disorder. The first is known as the "childhood-onset type" and occurs when conduct disorder symptoms are present before the age of 10 years.
No medications have been FDA approved for Conduct Disorder, but risperidone (a second-generation antipsychotic) has the most evidence to support its use for aggression in children who have not responded to behavioral and psychosocial interventions. Selective Serotonin Reuptake Inhibitors (SSRIs) are also sometimes used to treat irritability in these patients. Prognosis
About 25-40% of youths diagnosed with conduct disorder qualify for a diagnosis of antisocial personality disorder when they reach adulthood. For those that do not develop ASPD, most still exhibit social dysfunction in adult life. Epidemiology
Conduct disorder is estimated to affect 51.1 million people globally as of 2013. The percentage of children affected by conduct disorder is estimated to range from 1-10%. However, among incarcerated youth or youth in juvenile detention facilities, rates of conduct disorder are between 23% and 87%. Sex differences
The majority of research on conduct disorder suggests that there are a significantly greater number of males than females with the diagnosis, with some reports demonstrating a threefold to fourfold difference in prevalence. However, this difference may be somewhat biased by the diagnostic criteria which focus on more overt behaviors, such as aggression and fighting, which are more often exhibited by males. Females are more likely to be characterized by covert behaviors, such as stealing or running away. Moreover, conduct disorder in females is linked to several negative outcomes, such as antisocial personality disorder and early pregnancy, suggesting that sex differences in disruptive behaviors need to be more fully understood. Females are more responsive to peer pressure including feelings of guilt than males.