Neonatal Jaundice

What is Neonatal Jaundice?

Neonatal jaundice is a common condition that causes yellowing of a newborn baby's skin and eyes. It happens when bilirubin builds up in the blood. Bilirubin is a yellow substance created when red blood cells break down naturally.

Most newborns develop some jaundice in their first week of life. Their young livers are still learning to process and remove bilirubin efficiently. In most cases, the jaundice is mild and goes away on its own within two weeks. However, high levels of bilirubin need medical attention to prevent complications.

About 60 percent of full-term babies and 80 percent of premature babies develop jaundice. The condition usually appears between the second and fourth day after birth. While most cases are harmless, severe jaundice can lead to serious health problems if left untreated.

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Symptoms

Yellow tint to the skin, starting on the face and spreading downward
Yellowing of the whites of the eyes
Poor feeding or difficulty waking for feedings
Lethargy or lack of energy
High-pitched crying
Dark yellow or brown urine
Pale-colored stools

Mild jaundice may be hard to see in babies with darker skin tones. Check the gums and whites of the eyes in good lighting. Severe symptoms like arching of the body or seizures require immediate medical care.

Causes and risk factors

Neonatal jaundice happens when a baby's liver cannot process bilirubin fast enough. Newborn livers are immature and need time to develop this ability. Babies also have more red blood cells than adults, and these cells have shorter lifespans. This creates more bilirubin than their young livers can handle.

Risk factors include premature birth, bruising during delivery, blood type incompatibility with the mother, and breastfeeding difficulties. Some babies have genetic conditions like G6PD deficiency that cause red blood cells to break down faster. This creates even more bilirubin. Other causes include infections, liver problems, and certain enzyme deficiencies that run in families.

How it's diagnosed

Doctors diagnose neonatal jaundice through physical examination and blood tests. They check how yellow the skin looks and measure bilirubin levels in the blood. A transcutaneous bilirubinometer can estimate bilirubin through the skin without a blood draw. Blood tests measure total bilirubin and direct bilirubin to determine the type and severity of jaundice.

Additional tests may check for blood type incompatibility, red blood cell counts, and liver function. Testing for G6PD deficiency helps identify babies at higher risk for severe jaundice. Talk to your pediatrician about testing if your newborn shows signs of jaundice. Early detection and monitoring prevent complications.

Treatment options

Phototherapy using special blue lights to break down bilirubin in the skin
Frequent feedings to help baby pass bilirubin through stools
Ensuring baby gets enough fluids through breast milk or formula
Exchange transfusion for severe cases to replace baby's blood
Treating underlying conditions like infections or blood disorders
Monitoring bilirubin levels until they return to normal

Frequently asked questions

Jaundice happens when bilirubin builds up faster than a baby's liver can process it. Newborns have immature livers that need time to develop. They also break down red blood cells faster than adults, creating more bilirubin. Most cases resolve naturally as the liver matures.

Most cases appear between day two and day four after birth. Jaundice that appears in the first 24 hours is less common and needs immediate medical attention. Breastfeeding jaundice may appear later, around the first week of life.

Most cases are mild and harmless. However, very high bilirubin levels can cause brain damage if left untreated. This serious condition is called kernicterus. Regular monitoring and early treatment prevent complications in almost all cases.

Phototherapy is the most common treatment. Special blue lights help break down bilirubin in the skin. Frequent feedings help babies pass bilirubin in their stools. Severe cases may need exchange transfusion to replace the baby's blood.

Breastfeeding can be associated with two types of jaundice. Breastfeeding jaundice happens when baby doesn't get enough milk in the first few days. Breast milk jaundice appears later and is linked to substances in breast milk. Neither type means you should stop breastfeeding.

G6PD deficiency is a genetic condition that affects red blood cells. Babies with this condition break down red blood cells faster than normal. This creates more bilirubin and increases the risk of severe jaundice. A simple blood test can check for G6PD deficiency.

Mild jaundice usually disappears within two to three weeks without treatment. Jaundice in premature babies may last longer. Babies receiving phototherapy typically improve within one to two days. Your pediatrician will monitor bilirubin levels until they return to safe ranges.

Watch for jaundice appearing in the first 24 hours after birth. Other warning signs include extreme sleepiness, poor feeding, high-pitched crying, and arching of the body. Jaundice spreading to the arms, legs, or belly needs medical evaluation. Contact your pediatrician immediately if you notice these symptoms.

You cannot prevent all cases of jaundice. However, feeding your baby frequently helps move bilirubin through the digestive system. Aim for eight to twelve feedings per day in the first week. Monitoring during pregnancy and after birth helps catch problems early.

Yes, premature babies are at higher risk. Their livers are even less mature than full-term babies. They may also have more difficulty feeding, which can worsen jaundice. About 80 percent of premature babies develop some degree of jaundice.