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Autism spectrum disorders in children with seizures in the first year of life - a population-based study
Evald Saemundsen1, Petur Ludvigsson1, Ingibjorg Hilmarsdottir1
1State Diagnostic and Counseling Center, Division of Autism and Communication Disorders, Kopavogur, IcelandLandspitali University Hospital, Department of Pediatrics, Reykjavik, IcelandHealth Care Center Efstaleiti, Reykjavik, IcelandDepartment of Preventive Medicine, University of Iceland, Reykjavik, Iceland.
Insights
Children with early-life seizures have a higher prevalence of autistic spectrum disorders (ASDs). This study found that ASDs were more common in females and associated with brain abnormalities in this seizure cohort.
Area of Science:
- Pediatric Neurology
- Developmental Neuroscience
Background:
- Early-life seizures are a known risk factor for neurodevelopmental disorders.
- Autistic spectrum disorders (ASDs) represent a range of neurodevelopmental conditions affecting social interaction and communication.
Purpose of the Study:
- To investigate the prevalence and characteristics of autistic spectrum disorders (ASDs) in children with a history of unprovoked seizures during their first year of life.
Main Methods:
- A cohort of 102 children diagnosed with early-life unprovoked seizures was identified.
- Participants underwent screening for ASDs using questionnaires and diagnostic interviews if developmental concerns were raised.
Main Results:
- Of 84 participants, 36.9% were investigated for ASD. Six children (7.1%) were diagnosed with ASD, all of whom had intellectual disability.
- ASD diagnosis was associated with congenital brain abnormalities in 3 children and a higher prevalence in females within this cohort.
Conclusions:
- The prevalence of ASD appears elevated in children with a history of first-year seizures compared to the general population.
- Children with ASD and early-life seizures may exhibit a higher rate of congenital brain abnormalities and be more frequently female.
Purpose:
To describe autistic spectrum disorders (ASDs) in a cohort of children with history of unprovoked seizures other than infantile spasms in the first year of life.
Methods:
The source of data was computer records from all the three pediatric departments in Iceland. Children diagnosed 1982-2000 with unprovoked seizures with onset between 28 days and 12 months of age (N = 102) were invited to participate in a study. Children with known developmental disorders and those whose parents had concerns regarding their child's development or behavior were investigated for possible ASD. Parents were asked to complete the Social Communication Questionnaire and children scoring 10 points or higher were further examined with the Autism Diagnostic Interview-Revised and observational measures.
Results:
Eighty-four children (82.4%), 28 boys and 56 girls, participated in the study and 36.9% (31/84) were investigated for possible ASD. Twenty-four (28.6%) had at least one neurodevelopmental disorder, 14.3% had mental retardation (MR), and six (7.1%) were diagnosed with ASD, all of whom also had MR and three of whom had congenital brain abnormalities.
Conclusion:
These results suggest that the estimated prevalence of ASD is higher in children with history of seizure in the first year of life than it is in the general population. There are indications that support the view that children with ASD and history of seizure in the first year of life have higher prevalence of congenital brain abnormalities and are more often female, than other children with ASD.
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