Cardiomegaly Hypoglycemia in early infancy can cause jitteriness, lethargy, unresponsiveness, or seizures. The most severe forms may cause macrosomia in utero, producing a large birth weight, often accompanied by abnormality of the pancreas. Milder hypoglycemia in infancy causes hunger every few hours, with increasing jitteriness or lethargy. Milder forms have occasionally been detected by investigation of family members of infants with severe forms, adults with the mildest degrees of<unk>  have a decreased tolerance for prolonged fasting. Other presentations are: * Dizziness * Intellectual disability * Hypoglycemic coma * Cardiomegaly The variable ages of presentations and courses suggest that some forms of<unk> , especially those involving abnormalities of KATP channel function, can worsen or improve with time. The potential harm from hyperinsulinemic hypoglycemia depends on the severity, and duration.<unk> ldren who have recurrent hyperinsulinemic hypoglycemia in infancy can suffer harm to the brain.
Congenital hyperinsulinism
Leucine-sensitive hypoglycemia of infancy
Kosaki overgrowth syndrome
Idiopathic hypoglycemia
Insulinoma
Congenital adrenal hyperplasia
Lipoid congenital adrenal hyperplasia
Glucagonoma