title: Psychiatric comorbidity in children and adolescents.
abstract: OBJECTIVE
  This review critically discusses recent research findings on psychiatry comorbidity in children and adolescent persons.
  
  
  RESULTS
  Several epidemiological studies have confirmed previous findings in relation to the high rates of psychiatric comorbidity in children and adolescents. In particular, psychiatric comorbidity has been detected in children with substance abuse, and with conduct and oppositional defiant, anxiety and attention deficit-hyperactivity disorders. These studies have also investigated the impact comorbidity has on symptom presentation, outcome and service utilization. Although the presence of concurrent psychiatric disorders in children and adolescents is well established, there has been limited research on the need for different treatment modalities in children suffering from more than one disorder.
  
  
  CONCLUSIONS
  It is widely accepted that children and adolescents frequently present with more than one psychiatric diagnosis. The substantial variation in psychiatric comorbidity found in the literature may be due to the different methods of data collection as well as to the classification system used. Whether children and adolescents fulfil diagnostic criteria for a mixed condition (International Classification of Diseases-10) or multiple disorders (Diagnostic and Statistical Manual of Mental Disorders-IV), it is important that the concurrent psychopathology be recognized and treated.
authors.affiliation: Eating Disorders Service, Brandon Mental Health Unit, Leicester General Hospital, UK. ja42@le.ac.uk
authors.forename: Jon
authors.initials: J
authors.lastname: Arcelus
authors.forename: Panos
authors.initials: P
authors.lastname: Vostanis