Infant masking of recurrent hypoglycaemia and metabolic disease

Bella Zhong1, Michael Armarego1, Nathan Dignam1

  • 1General Medicine, Royal Children's Hospital Melbourne, Parkville, Victoria, Australia.

BMJ Case Reports
|December 21, 2025
PubMed

Insights

Children are more prone to hypoglycemia than adults due to their limited ability to regulate blood glucose. Misdiagnosis is common, especially in younger children, due to factors like altered feeding patterns and cognitive biases.

Area of Science:

  • Pediatrics
  • Endocrinology
  • Metabolic Disorders

Background:

  • Children, particularly infants, have a reduced capacity for glucose homeostasis compared to adolescents and adults.
  • Illness and fasting in children can accelerate the metabolic shift towards ketosis, increasing hypoglycemia risk.
  • Cognitive biases and confounding factors can lead to misdiagnosis or delayed diagnosis of hypoglycemia in pediatric patients.

Purpose of the Study:

  • To highlight the increased prevalence and diagnostic challenges of hypoglycemia in children.
  • To discuss the impact of physiological factors and cognitive biases on accurate diagnosis.
  • To emphasize the importance of considering confounders in pediatric hypoglycemia cases.

Main Methods:

  • Review of current literature on pediatric hypoglycemia.
  • Analysis of diagnostic challenges and contributing factors.
  • Discussion of clinical presentation and confounding variables.

Main Results:

  • Hypoglycemia is more frequent in childhood due to immature glucose regulation.
  • Accelerated starvation and ketosis during illness can mimic or mask hypoglycemia.
  • Delayed diagnosis occurs in up to 28% of cases, often due to confounding factors like altered feeding.

Conclusions:

  • Pediatric hypoglycemia requires careful diagnostic consideration due to unique physiological factors.
  • Confounding variables, such as feeding behaviors in infants, can mask hypoglycemia symptoms.
  • Awareness of cognitive biases and confounders is crucial for timely and accurate diagnosis in children.

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