Author:
BARON-COHEN S.,SCAHILL V. L.,IZAGUIRRE J.,HORNSEY H.,ROBERTSON M. M.
Abstract
Background. An earlier small-scale study of children with autism revealed that 8·1% of such
patients were co-morbid for Gilles de la Tourette syndrome (GTS). The present study is a large scale
test of whether this result replicates.Method. Four hundred and forty-seven pupils from nine schools for children and adolescents with
autism were screened for the presence of motor and vocal tics.Results. Subsequent family interviews confirmed the co-morbid diagnosis of definite GTS in 19
children, giving a prevalence rate of 4·3%. A further 10 children were diagnosed with probable GTS
(2·2%).Conclusions. These results indicate that the rate of GTS in autism exceeds that expected by chance,
and the combined rate (6·5%) is similar to the rates found in the smaller-scale study. Methodological
considerations and alternative explanations for an increased prevalence are discussed.
Publisher
Cambridge University Press (CUP)
Subject
Psychiatry and Mental health,Applied Psychology
Cited by
139 articles.
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