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A total population study of children, aged 13 years and under, suggested that there has been an apparent rise in the frequency of autistic disorder and autistic-like conditions (excluding Asperger's syndrome) in one area of western Sweden over the last ten years. The frequency was 4.0/100,000 in 1980, 7.5/10,000 in 1984 and 11.6/10,000 in 1988 in the city(More)
This follow-up study reports data from a population-based series of children in the Göteborg region of Sweden diagnosed in childhood as suffering from infantile autism and other childhood psychoses and followed through to the ages of 16-23 years. The results of the study are in good accord with the only previous population-based study of the same kind. IQ(More)
Seventeen children and young adults with Moebius syndrome were examined with a view to finding symptoms of autism. Some 40% of the group showed all or many of the symptoms typical of autistic disorder. The high frequency of autistic symptoms in Moebius syndrome might be a marked overrepresentation and could be suggestive of a common underlying(More)
The aim of this study was to examine the prevalence of angelman syndrome in prepubertal school-aged children and analyze its comorbidity with autistic disorder. A clinical/psychiatric evaluation of a population-based sample of 6- to 13-year-old mentally retarded children with active epilepsy was performed. Four individuals in a total population of almost(More)
Thirty-five children with autistic disorder and 17 with autistic-like conditions underwent an exhaustive neurobiological evaluation, and the findings were contrasted with those obtained from various comparison groups. Almost 90 per cent of the children with autistic disorder and autistic-like conditions had major indications of brain damage or dysfunction.(More)
The Nordic countries were screened for the occurrence of cases of autism with a same-sexed twin under age 25 years. Twenty-one pairs (11 monozygotic and 10 dizygotic) of twins and one set of identical triplets were found and extensively examined. The concordance for autism by pair was 91% in the monoygotic and 0% in the dizygotic pairs. The corresponding(More)
A population-based study of infantile autism from western Sweden has been completed. Urban children with autism more often than age-matched children in the general population had immigrant parents from 'exotic' countries. No such trend was seen in rural children with infantile autism.
OBJECTIVE To assess the prevalence and types of psychiatric disorders in a representative sample of school-age children with the combination of mental retardation (MR) and active epilepsy. SUBJECTS AND METHODS Ninety-eight children were identified with MR and active epilepsy in a population-based study from Göteborg, Sweden, which has a general population(More)
The total population of children under 10 years in one Swedish urban area and one rural area was screened for infantile autism (IA) and autistic-like conditions (AC). A total prevalence of 6.6 per 10 000 was found, which is somewhat higher than in previous similar studies of the same region. Infantile autism accounted for two-thirds of the cases. Boys far(More)
The aim of this study was to examine the comorbidity pattern, seizure characteristics, and aetiology in a representative group of children with a combination of autism spectrum disorder (ASD), active epilepsy, and learning disability. Ninety children (47 males, 43 females; mean age 11 years 2 months, range 8 to 16 years at the time of psychiatric(More)