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Intelligence, motor skills and behaviour at 5 years in early-treated congenital hypothyroidism

P W Fuggle1, D B Grant, I Smith

  • 1Institute of Child Health, London, United Kingdom.

European Journal of Pediatrics
|June 1, 1991
PubMed

Insights

Children with early-treated congenital hypothyroidism (CH) show significant motor skill deficits, especially in balance. Severity of CH impacts cognitive and motor outcomes, suggesting potential early vestibular system impairment.

Area of Science:

  • Pediatric Endocrinology
  • Neurodevelopmental Pediatrics
  • Developmental Psychology

Background:

  • Congenital hypothyroidism (CH) requires early treatment to prevent developmental issues.
  • Neonatal screening enables timely diagnosis and intervention for CH.
  • Long-term neurodevelopmental outcomes in early-treated CH require continued investigation.

Purpose of the Study:

  • To assess cognitive functioning, motor skills, and behavior in 5-year-old children with early-treated CH.
  • To compare outcomes between children with CH and matched controls.
  • To investigate the influence of hypothyroidism severity on neurodevelopmental outcomes.

Main Methods:

  • A cohort of 57 children with early-treated CH was compared to 51 matched controls.
  • Cognitive function (IQ), motor skills, and behavior were assessed at age 5.
  • Statistical analyses were performed to identify significant differences between groups and within the CH cohort based on severity.

Main Results:

  • No statistically significant differences were found in IQ or behavior between children with CH and controls.
  • Children with CH exhibited significant deficits in motor skills, particularly in balance (p = 0.0003).
  • Greater severity of hypothyroidism at diagnosis correlated with poorer IQ and motor skill performance.

Conclusions:

  • Early treatment of CH does not fully prevent motor skill deficits, especially affecting balance.
  • Hypothyroidism severity is a critical factor influencing neurodevelopmental outcomes in CH.
  • Findings suggest potential early vestibular system impairment in children with CH despite timely treatment.

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