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  • Title: Autism spectrum traits in children and adolescents with obsessive-compulsive disorder (OCD).
    Author: Ivarsson T, Melin K.
    Journal: J Anxiety Disord; 2008 Aug; 22(6):969-78. PubMed ID: 18053683.
    Abstract:
    OBJECTIVE: Assess the prevalence of autistic traits (AST) in pediatric obsessive-compulsive disorder (OCD) and relate them to OCD co-morbidity and compare them with published normative data. METHODS: Pediatric patients with obsessive-compulsive disorder (n=109) according to the DSM-IV were studied using parent ratings of the Autistic Symptom/Syndrome Questionnaire to assess AST symptoms as a continuous rather than categorical trait. The KSADS, a semi-structured psychiatric interview, was used for the psychiatric diagnostic evaluation. Also, the Children's Yale-Brown Obsessive-Compulsive Scale was used to assess OCD severity and other clinical features. RESULTS: AST was common among our patients. Symptom scores were highest in cases with co-morbid Autistic Spectrum Disorders, but cases with other co-morbidities as tics/Tourette and attention/behavioral disorders also scored higher. All sub-groups, including OCD without these co-morbidities scored higher than the Swedish normative group. Using ANOVA, co-morbid ASD and tics/Tourette (plus a term for gender by tic interaction indicating that girls with tics scored high, otherwise low) and pathological doubt contributed (R2=.41) to the AST-traits, while OCD severity and co-morbid anxiety- and depressive disorders did not. CONCLUSION: AST traits are prevalent in OCD and seem to be intricately associated with the co-morbidities as well as the OCD syndrome itself. The findings might have implication for our nosological understanding of OCD which currently is discussed.
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