Teenager's with conduct disorder have a repetitive and persistent pattern of behavior in which they violate the rights of others, or violate norms or rules that are appropriate to their age.

Their conduct is more serious than the ordinary mischief and pranks of children and adolescents. Difficulty at home, in school, and in the community is common, and frequently there is very early sexual activity.

Self-esteem is usually low, although the adolescent may project an image of "toughness." Teenagers with this disorder have also been described as "delinquent" or "anti- social."

Some teenagers with conduct disorder may also have symptoms of other psychiatric disorders such as ADHD, depression, alcohol & drug abuse.