Prevalence of Functional Constipation in Children with Down Syndrome: A Study Conducted at a General Pediatrics

Ana Maria Daun Cação Pereira1, Catarina Shin1, Ana Beatriz Henrique Parenti1

  • 1Department of Pediatrics, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, Brazil.

Biomedicines
|January 28, 2026
PubMed

Insights

Children with Down syndrome (DS) experience a high prevalence of functional constipation (FC). Delayed toilet training was associated with increased risk of FC in these children.

Area of Science:

  • Pediatrics
  • Gastroenterology
  • Genetics

Background:

  • Gastrointestinal and eating disorders are common in children with Down syndrome (DS).
  • Functional constipation (FC) significantly impacts daily life for children with DS.
  • Investigating bowel habits in DS is crucial for developing diagnostic and treatment guidelines.

Purpose of the Study:

  • To determine the prevalence of functional constipation (FC) in children with Down syndrome (DS).
  • To identify factors associated with FC in this population.
  • To inform practice guidelines for pediatricians managing DS patients.

Main Methods:

  • Observational, analytical, cross-sectional study of 36 children with DS.
  • Parental interviews utilizing Rome IV criteria and Bristol Stool Scale for bowel habit assessment.
  • Nutritional assessment using DS-specific growth curves.

Main Results:

  • A high prevalence of FC was observed (41.7% of participants).
  • Children with FC reported fewer bowel movements, harder stools, and experienced pain during defecation.
  • Delayed toilet training (after 30 months) was associated with achieving bowel control.

Conclusions:

  • Children with Down syndrome exhibit a high prevalence of functional constipation.
  • Delayed sphincter training is linked to an increased risk of FC in children with DS.
  • A standardized care protocol and flowchart can aid pediatricians in diagnosing and managing FC in this population.

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