[Hypoglycemia associated with oral sulfonylurea hypoglycaemic agents in an 11-year-old girl].

UNLABELLED: In children more than 8 years old, hyperinsulinism is the most common cause of hypoglycemia.

CASE REPORT: We report the case of an 11-year-old girl who presented recurrent hypoglycemia with endogenous hyperinsulinism (high insulin and C-peptide concentrations). The morphological investigations didn't find insulinoma. Finally the questioning identifies the voluntary intoxication with hypoglycemic agent. At a later date, the sulfonylurea dosage during an hypoglycaemic episode was positive.

CONCLUSION: The sulfonylurea drugs can mimic an endogenous hyperinsulinism and mislead the diagnostic to an insulinoma suspicion and lead to a surgical exploration. A sulfonylurea dosage should be done before planning out surgery.