It is normal for a baby's bilirubin level to be a bit high after birth.

When the baby is growing in the mother's womb, the placenta removes bilirubin from the baby's body. The placenta is the organ that grows during pregnancy to feed the baby. After birth, the baby's liver starts doing this job. It may take some time for the baby's liver to be able to do this efficiently.

Most newborns have some yellowing of the skin, or jaundice. This is called physiological jaundice. It is often most noticeable when the baby is 2 to 4 days old. Most of the time, it does not cause problems and goes away within 2 weeks.

Two types of jaundice may occur in newborns who are breastfed. Both types are usually harmless.

• Breastfeeding jaundice is seen in breastfed babies during the first week of life. It is more likely to occur when babies do not nurse well or the mother's milk is slow to come in.
• Breast milk jaundice may appear in some healthy, breastfed babies after day 7 of life. It is likely to peak during weeks 2 and 3, but may last at low levels for a month or more. The problem may be due to how substances in the breast milk affect the breakdown of bilirubin in the liver. Breast milk jaundice is different than breastfeeding jaundice.

Severe newborn jaundice may occur if the baby has a condition that increases the number of red blood cells that need to be replaced in the body, such as:

• Abnormal blood cell shapes (such as sickle cell anemia)
• Blood type mismatch between the mother and baby (Rh incompatibility)

  Rh incompatibility

  Rh incompatibility is a condition that develops when a pregnant woman has Rh-negative blood and the baby in her womb has Rh-positive blood.

  

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• Bleeding underneath the scalp (cephalohematoma) caused by a difficult delivery
• Higher levels of red blood cells, which is more common in small-for-gestational age (SGA) babies and some twins
• Infection
• Lack of certain important proteins, called enzymes

Things that make it harder for the baby's body to remove bilirubin may also lead to more severe jaundice, including:

• Certain medicines
• Infections present at birth, such as rubella, syphilis, and others
• Diseases that affect the liver or biliary tract, such as cystic fibrosis or hepatitis
• Low oxygen level (hypoxia)
• Infections (sepsis)
• Many different genetic or inherited disorders

Babies who are born too early (premature) are more likely to develop jaundice than full-term babies.

Jaundice causes a yellow color of the skin. The color sometimes begins on the face and then moves down to the chest, belly area, legs, and soles of the feet.

Sometimes, infants with a severe jaundice may be very tired and feed poorly.

Health care providers will watch for signs of jaundice at the hospital. After the newborn goes home, family members will usually spot the jaundice.

Any infant who appears jaundiced should have bilirubin levels measured right away. This can be done with a blood test.

Many hospitals check total bilirubin levels on all babies at about 24 hours of age. Hospitals use probes that can estimate the bilirubin level just by touching the skin. High readings need to be confirmed with blood tests.

Tests that will likely be done include:

• Complete blood count
• Coombs test
• Reticulocyte count

Further testing may be needed for babies who need treatment or whose total bilirubin level is rising more quickly than expected.

Treatment is not needed most of the time.

When treatment is needed, the type will depend on:

• The baby's bilirubin level
• How fast the level has been rising
• Whether the baby was born early (babies born early are more likely to be treated at lower bilirubin levels)
• How old the baby is

A baby will need treatment if the bilirubin level is too high or is rising too quickly.

A baby with jaundice needs to take in plenty of fluids with breast milk or formula:

• Feed the baby often (up to 12 times a day) to encourage frequent bowel movements. These help remove bilirubin through the stools. Ask your provider before giving your newborn extra formula.
• In rare cases, a baby may receive extra fluids by IV.

Some newborns need to be treated before they leave the hospital. Others may need to go back to the hospital when they are a few days old. Treatment in the hospital usually lasts 1 to 2 days.

Leave the hospital

Your baby has been treated in the hospital for newborn jaundice. This article tells you what you need to know when your baby comes home.

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Sometimes, special blue lights are used on infants whose levels are very high. These lights work by helping to break down bilirubin in the skin. This is called phototherapy.

• The infant is placed under these lights in a warm, enclosed bed to maintain a constant temperature.
• The baby will wear only a diaper and special eye shades to protect the eyes.
• Breastfeeding should be continued during phototherapy, if possible.
• In rare cases, the baby may need an intravenous (IV) line to deliver fluids.

If the bilirubin level is not too high or is not rising quickly, you can do phototherapy at home with a fiberoptic blanket, which has tiny bright lights in it. You may also use a bed that shines light up from the mattress.

• You must keep the light therapy on your child's skin and feed your child every 2 to 3 hours (10 to 12 times a day).
• A nurse will come to your home to teach you how to use the blanket or bed, and to check on your child.
• The nurse will return daily to check your child's weight, feedings, skin, and bilirubin level.
• You will be asked to count the number of wet and dirty diapers.

In the most severe cases of jaundice, an exchange transfusion is required. In this procedure, the baby's blood is replaced with fresh blood. Giving intravenous immunoglobulin to babies who have severe jaundice may also be effective in reducing bilirubin levels.

Newborn jaundice is not harmful most of the time. For most babies, jaundice will get better without treatment within 1 to 2 weeks.

A very high level of bilirubin can damage the brain. This is called kernicterus. The condition is almost always diagnosed before the level becomes high enough to cause this damage. Treatment is usually effective.

Rare, but serious complications from high bilirubin levels include:

• Cerebral palsy
• Deafness
• Kernicterus, which is brain damage from very high bilirubin levels

All babies should be seen by a provider in the first 5 days of life to check for jaundice:

• Infants who spend less than 24 hours in a hospital should be seen by age 72 hours.
• Infants who are sent home between 24 and 48 hours should be seen again by age 96 hours.
• Infants who are sent home between 48 and 72 hours should be seen again by age 120 hours.

Jaundice is an emergency if the baby has a fever, has become listless, or is not feeding well. Jaundice may be dangerous in high-risk newborns.

Jaundice is generally NOT dangerous in babies who were born full term and who do not have other medical problems. Call the infant's provider if:

• Jaundice is severe (the skin is bright yellow)
• Jaundice continues to increase after the newborn visit, lasts longer than 2 weeks, or other symptoms develop
• The feet, especially the soles, are yellow

Talk with your baby's provider if you have questions.

Questions

Newborn jaundice is a common condition. It is caused by high levels of bilirubin (a yellow coloring) in your child's blood. This can make your chil...

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In newborns, some degree of jaundice is normal and probably not preventable. The risk of serious jaundice can often be reduced by feeding babies at least 8 to 12 times a day for the first several days and by carefully identifying infants at highest risk.

All pregnant women should be tested for blood type and unusual antibodies. If the mother is Rh negative, follow-up testing on the infant's cord is recommended. This may also be done if the mother's blood type is O positive.

Careful monitoring of all babies during the first 5 days of life can prevent most complications of jaundice. This includes:

• Considering a baby's risk for jaundice
• Checking bilirubin level in the first day or so
• Scheduling at least one follow-up visit the first week of life for babies sent home from the hospital in 72 hours