Editor—Neonatal hyperinsulinaemic hypoglycaemia (NHH) is characterised by hypoglycaemia, inadequate hyperinsulinism, a lack of urinary ketones, and requires instant and effective treatment to prevent cerebral damage. This consists of diazoxide, glucagon, and octreotide, a somatostatin analogue. None the less, most patients require subtotal pancreatectomy.

We report the second child of a healthy family, who was delivered at 37 weeks after an uneventful pregnancy (birthweight 3430 g). Initially, hypoglycaemia (blood glucose of 80 mg/l) was noted. Table 1 summarises the most important laboratory values. The glucose:insulin ratio was …