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Breast milk jaundice

Jaundice is a condition that causes the skin and parts of the eyes to turn a yellow color.

Breast milk jaundice is long-term jaundice in an otherwise healthy, breast-fed baby. It develops after the first week of life and continues up to the sixth week of life.

Alternative Names

Hyperbilirubinemia

Causes, incidence, and risk factors

Bilirubin is a yellow pigment that is created as the body gets rid of old red blood cells. The liver helps break down bilirubin so that it can be removed from the body in the stool.

If jaundice occurs or lasts past the first week of life in an otherwise healthy and thriving breast-fed infant, the condition may be called "breast milk jaundice." It is probably caused by factors in the breast milk that block certain proteins in the liver that break down bilirubin.

Breast milk jaundice tends to run in families. It occurs equally often in males and females and affects 0.5% to 2.4% of all newborns.

Symptoms

Your child's skin, and possibly also the whites of the eyes (sclera) will look yellow.

Signs and tests

Laboratory tests that may be done include:

  • Bilirubin level (total and direct)
  • Blood smear to look at blood cell shapes and sizes
  • Blood typing
  • Complete blood count
  • Reticulocyte count (number of slightly immature red blood cells)

In some cases, a blood test to check for glucose-6-phosphate dehydrogenase (G6PD) may be done. G6PD is a protein that helps red blood cells work properly.

Treatment

Treatment will depend on:

  • Your baby's bilirubin level, which naturally rises during the first week of life
  • How fast the bilirubin level has been going up
  • Whether your baby was born early
  • How old your baby is now

Often, the bilirubin level is low (20 mg/dL is the usual normal limit for babies who are over a week old). Sometimes no treatment is needed, other than close follow-up.

Sometimes jaundice is caused by not enough breastfeeding (instead of from the milk itself). Extra fluids are helpful for babies who have not been getting enough breast milk.

  • Nursing more often (up to 12 times a day) will increase the baby's fluid levels and can cause the bilirubin level to drop.
  • Ask your doctor before giving your newborn formula. It is still best to keep breast-feeding.
  • At times, fluids given through a vein can help increase the baby's fluid level and lower bilirubin levels.

To help break down the bilirubin, your child may be placed under special blue lights (phototherapy). If the bilirubin level is not too high or is not rising quickly, you can do phototherapy at home.

  • You can use either a fiberoptic blanket that has tiny bright lights in it, or a bed that shines light up from the mattress. A nurse will come to your home to teach you how to use the blanket or bed, and to check on your child.
  • 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). Feeding prevents dehydration and helps bilirubin leave the body.
  • Therapy will continue until your baby's bilirubin level is low enough to be safe.

If the bilirubin level is above the usual limit and other causes have already been ruled out, the mother can stop nursing for 24 hours to see if the baby's bilirubin level goes down. Giving the baby formula will cause the bilirubin level to drop quickly in babies with breast milk jaundice.

  • During that time the mother can express the milk or pump her breasts (to stay comfortable and maintain the flow of milk) while feeding the baby formula.
  • In most cases, when nursing is restarted the bilirubin will not return to its previous levels.

Expectations (prognosis)

The baby should recover fully with the right monitoring and treatment.

Complications

With the right treatment, there are usually no complications. However, babies who do not get the right medical care can have severe effects. High bilirubin levels can be harmful to the baby's brain and other organs.

Babies whose bilirubin levels have been unusually high may need follow-up hearing screening after the newborn period.

Calling your health care provider

Call your health care provider right away if you are breastfeeding and your baby's skin or eyes become yellow (jaundiced).

Prevention

Breast milk jaundice cannot be prevented. When the condition occurs and the baby is a yellow color, it is very important to have the baby's bilirubin level checked right away. If the bilirubin level is high, it is important to make sure there are no other medical problems.

You can treat jandice that is caused by not enough breastfeeding by making sure your baby is getting enough breast milk. Give your baby unlimited time at each breast, and feed about 10 to 12 times each day starting the first day of life. Get help from a lactation consultant or your doctor as soon as possible if you have any trouble breastfeeding.

References

Moerschel SK, Cianciaruso LB, Tracy LR. A practical approach to neonatal jaundice. Am Fam Physician. 2008;77:1255-1262.

Preer GL, Philipp BL. Understanding and managing breast milk jaundice. Arch Dis Child Fetal Neonatal Ed. doi: 10.1136/adc.2010.184416.

Updated: 6/21/2011

Kimberly G. Lee, MD, MSc, IBCLC, Associate Professor of Pediatrics, Division of Neonatology, Medical University of South Carolina, Charleston, SC. Review Provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.


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