Which disorder is characterized by significant behavioral problems in a child, including bullying and truancy?

Conduct disorder is characterized by a pattern of behavior in children and adolescents that violates the basic rights of others or societal norms. This includes behaviors such as aggression toward people and animals, destruction of property, deceitfulness, and serious violations of rules. Bullying and truancy are common manifestations of conduct disorder, as individuals may demonstrate defiance and a lack of empathy or concern for the impact of their actions on others.

Children with conduct disorder often engage in more severe behavioral issues compared to those with other disorders like oppositional-defiant disorder, which typically involves argumentative and defiant behavior but does not reach the same level of severity that includes bullying or truancy. The other disorders listed have their own distinct features but do not encompass the broad range of significant behavioral problems, particularly those involving aggression and rule-breaking, seen in conduct disorder.