Symptoms:

The infant is usually large for gestational age. Other symptoms may include:

• Blue or patchy (mottled) skin color, rapid heart rate, rapid breathing (signs of immature lungs or heart failure)
• Newborn jaundice (yellow skin)
• Poor feeding, lethargy, weak cry (signs of severe low blood sugar)
• Puffy face
• Reddish appearance
• Tremors or shaking shortly after birth

Signs and tests:

An ultrasound performed on the mother in the last few months of pregnancy shows that the baby is large for gestational age.

Lung maturity testing may be performed on the amniotic fluid if delivery is being considered more than a week before the due date.

After birth, tests may show that the infant has low blood sugar and low blood calcium. An echocardiogram may show an abnormally large heart, which can lead to heart failure.