The child with a Conduct Disorder does not respect authority, has little regard for the basic rights of others and breaks major societal rules; he or she demonstrates aggressive conduct that threatens physical harm or property damage, deceitfulness, theft, truancy or running away from home. The child with a Conduct Disorder is often vengeful, irascible, and has a chip on his shoulder. The cause of Conduct Disorder is believed to be a combination of genetic vulnerability and environmental factors. Treatment plans might include behavior therapy with the child and parents and pharmacotherapy.