Programs that specialize in the treatment of adolescents, usually age 12 or 13 through 17, who have adjustment problems, behavior problems, emotional disturbance, a personality disorder or incipient mental illness. The programs may help youth troubled by low self-esteem, social isolation, peer pressure, bullying, school performance issues, truancy, anger management issues, family problems, grief and loss, sexual promiscuity, sexually transmitted infection, alcohol or drug addiction, eating disorders, oppositional and defiant behaviors, depression and anxiety, suicidal thoughts or other difficult issues.