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Congenital isolated hyperinsulinism

Disease definition

Congenital isolated hyperinsulinism (CHI), a rare endocrine disease is the most frequent cause of severe and persistent hypoglycemia in the neonatal period and early infancy and is characterized by an excessive or uncontrolled insulin secretion (inappropriate for the level of glycemia) and recurrent episodes of profound hypoglycemia requiring rapid and intensive treatment to prevent neurological sequelae. CHI comprises 2 different forms: diazoxide-sensitive diffuse hyperinsulinism and diazoxide-resistant hyperinsulinism (see these terms).


Classification level: Group of disorders
  • Synonym(s):
    • CHI
    • PHHI
    • Persistent hyperinsulinemic hypoglycemia of infancy
  • Prevalence: 1-9 / 100 000
  • Inheritance: Autosomal dominant or Autosomal recessive 
  • Age of onset: Childhood, Neonatal, Infancy
  • ICD-10: E16.1
  • OMIM: -
  • UMLS: C0027773  C1257959  C3888018
  • MeSH: D044903
  • GARD: 3947
  • MedDRA: -

Detailed information


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