Case report: The authors report the case of an infant presenting with status epilepticus, apneas and hypothermia, related to hyponatremia. The cause was water intoxication, secondary to feeding a dilute formula and free water. The parents were notoriously challenged by the care of their children. Such disorder could have been prevented.
Conclusion: Dietary history may be key to the diagnosis of hyponatremia in children. Water intoxication of nutritional origin can be prevented.