Cited by 456Pharmacological Effects and Toxicity StudiesAutism Spectrum Disorder ResearchPrenatal Substance Exposure Effects

Characteristics of fetal anticonvulsant syndrome associated autistic disorder

Rasalam, AD, Hailey, H, Williams, JHG, Moore, SJ, Turnpenny, PD, Lloyd, DJ, Dean, JCS·2005·Developmental Medicine & Child Neurology

Abstract

The aim of this study was to evaluate the clinical features and frequency of autistic disorder or Asperger syndrome (AS; according to Diagnostic and Statistical Manual of Mental Disorders, 4th edition [DSM-IV] criteria) in children exposed to anticonvulsant medication in utero. During a 20-year study period, 626 children were born in Aberdeen to mothers taking antiepileptic drugs (AEDs). The study examined long-term effects of prenatal exposure to AEDs in 260 children (122 males, 138 females). Of these, 26 (16 males) were reported by parents to have social or behavioural difficulties. Eleven children (6 males, 5 females) fulfilled the DSM-IV criteria for autistic disorder and one (female) fulfilled the DSM-IV criteria for AS. These children comprised 4.6% of the exposed children studied, and 1.9% of all exposed children born during the study period. Mean age of these children at diagnosis was 5 years 4 months (SD 2y 11mo) and 9 years 10 months (SD 3y 10mo) at the time of this study. Other children from the group of 26 had difficulties in areas of speech and language development and social communication but did not meet the criteria for an autism spectrum disorder (ASD). Sodium valproate was the drug most commonly associated with autistic disorder, five of 56 (8.9%) of the study children exposed to sodium valproate alone had either autistic disorder or AS. It was concluded that prenatal exposure to anticonvulsant medication is a risk factor for the development of an ASD. Fetal anticonvulsant syndrome associated autistic disorder is characterized by an even sex ratio, absence of regression or skill loss, and language delay in the absence of global delay.

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Crossref · 10.1017/s0012162205001076

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Authors
Rasalam, A., Hailey, H., Williams, J., Moore, S., Turnpenny, P., Lloyd, D., & Dean, J.
Affiliations
  • University of Aberdeen (GB)
  • Aberdeen Royal Infirmary (GB)
  • Memorial University of Newfoundland (CA)
  • Royal Aberdeen Children's Hospital (GB)
Venue
Developmental Medicine & Child Neurology
Publisher
Wiley
Published
2005-07-14
Volume
47
Issue
8
Pages
551-555
ISSN
  • 0012-1622 (ISSN-L)
  • 1469-8749
OpenAlex
W2137154110
Cited by
456
References
21
Citations by year
2026: 6 · 2025: 16 · 2024: 23 · 2023: 26 · 2022: 18 · 2021: 24 · 2020: 25 · 2019: 22 · 2018: 25 · 2017: 15 · 2016: 25 · 2015: 31 · 2014: 25 · 2013: 36 · 2012: 37
FWCI
12.12
Type
journal article
Language
en
Open access
closed
Locations
  • Developmental Medicine & Child Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • GlaxoSmithKline
  • World Health Organization
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmacological Effects and Toxicity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
Keywords
autistic disorder, Asperger syndrome, antiepileptic drugs, valproic acid, autism spectrum disorder, language delay, sex ratio, age at diagnosis
MeSH terms
Anticonvulsants, Autistic Disorder, Child, Child, Preschool, Epilepsy, Female, Fetal Diseases, Humans, Male, Mothers, Population Surveillance, Pregnancy, Prenatal Exposure Delayed Effects, Syndrome, Prevalence, Asperger Syndrome, Diagnostic and Statistical Manual of Mental Disorders

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