title: Psychopathological profile in children with chronic tic disorder and co-existing ADHD: additive effects.
abstract: The nature of the co-occurrence of chronic tic disorders (CTD) and attention deficit hyperactivity disorder (ADHD) is unclear. Especially in the field of psychopathology, the relationship of CTD and ADHD remains to be clarified. Thus, the aim of the present chart review study was to specify the contribution of CTD and/or ADHD to the psychopathological profile of the comorbid group (CTD+ADHD). The psychopathological profiles of four large groups (CTD-only (n=112), CTD+ADHD (n=82), ADHD-only (n=129), controls (n=144)) were measured by the eight subscales of the Child Behavior Checklist (CBCL) and analyzed by a 2x2 factorial design followed by contrasts. There were main effects of ADHD diagnosis on all but one subscale of the CBCL (Somatic Complaints). For CTD diagnosis, main effects were found for Attention Problems, Anxious/Depressed, Thought Problems, Social Problems and Somatic Complaints. The only interaction effect was seen for Somatic Complaints. While CTD and ADHD were both related to internalizing psychopathology of children in the CTD+ADHD group, ADHD had the largest effect on externalizing psychopathology in the comorbid group. At the level of psychopathology, an additive model for the co-occurrence of CTD and ADHD is strongly supported. In the comorbid group (CTD+ADHD), the ADHD diagnosis shows the strongest relation to externalizing psychopathology.
authors.affiliation: Department of Child and Adolescent Psychiatry, University of Goettingen, Germany, Von--Siebold--Strasse 5, 37075 Goettingen, Germany. vroessn@gwdg.de
authors.forename: Veit
authors.initials: V
authors.lastname: Roessner
authors.forename: Andreas
authors.initials: A
authors.lastname: Becker
authors.forename: Tobias
authors.initials: T
authors.lastname: Banaschewski
authors.forename: Aribert
authors.initials: A
authors.lastname: Rothenberger
mesh_terms: D000374:Aggression; D000704:Analysis of Variance; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications* / Q000503:physiopathology* / Q000523:psychology*; D002648:Child; D002652:Child Behavior; D002908:Chronic Disease; D006801:Humans; D007398:Interpersonal Relations; D007604:Juvenile Delinquency; D012919:Social Behavior; D013981:Tic Disorders / Q000150:complications* / Q000503:physiopathology / Q000523:psychology*