Summary
Infant jaundice is a condition affecting newborn babies, where the skin and eyes turn yellow due to an excess of bilirubin in the body. Bilirubin is a yellow substance produced during the breakdown of old red blood cells.
Normally, the liver processes bilirubin into bile, which is then excreted through the intestines. However, a newborn’s liver is still immature and may not efficiently convert bilirubin, leading to its buildup and causing the yellowing.
While generally not alarming, as 50-60% of full-term infants and 80% of premature babies experience it, proper monitoring and management are still essential to prevent complications like brain damage.
Treatment options include phototherapy, frequent breastfeeding to aid bilirubin elimination, and brief sun exposure.
Table of Contents
Symptoms of Infant Jaundice
The main symptom of infant jaundice is the yellowing of the skin and eyes. These symptoms usually appear within 2 to 4 days after birth. The yellowing often starts on the face and gradually spreads to the rest of the body.
To check for jaundice, gently press a finger on the baby’s forehead or nose. If the pressed area appears yellow, jaundice may be present. Use bright, natural light for a more accurate assessment.
Monitoring these symptoms is crucial for early detection and management.
Diagnostic Procedures for Infant Jaundice
Diagnosing infant jaundice involves several steps to assess the severity and underlying cause. Here’s how the process typically unfolds:
- Physical Examination. The doctor will examine the baby for yellowing of the skin and eyes, and may use a gentle finger press on the skin to check for signs of jaundice.
- Bilirubin Level Testing. A skin or blood test measures bilirubin levels. A transcutaneous bilirubinometer, a device placed on the skin, may be used initially. If levels appear high, a blood test will provide a more accurate measurement.
- Blood Type Testing and Coombs Test. If jaundice is suspected to be due to blood type incompatibility, testing for the baby’s and mother’s blood types may be performed. The Coombs test can check for antibodies that may be causing red blood cell breakdown.
- Complete Blood Count (CBC). This test assesses red blood cell count and may help identify underlying conditions contributing to jaundice.
- Additional Tests for Severe Cases. In cases where jaundice is severe or prolonged, tests to evaluate liver function or to rule out other conditions, such as genetic disorders, may be conducted.
Early diagnosis through these procedures helps ensure timely treatment, reducing the risk of complications such as kernicterus. Regular monitoring of bilirubin levels is crucial.
Complications of Untreated Infant Jaundice
If infant jaundice is left untreated, especially when bilirubin levels are very high, it can lead to serious complications:
- Kernicterus. A rare but severe form of brain damage caused by extremely high bilirubin levels. It can result in permanent neurological damage, leading to hearing loss, vision problems, developmental delays, or intellectual disability.
- Acute Bilirubin Encephalopathy. High bilirubin can affect the brain, causing symptoms like lethargy, poor feeding, a high-pitched cry, and muscle stiffness.
- Hearing Loss. Elevated bilirubin levels can damage the auditory nerve, leading to partial or total hearing impairment.
- Developmental and Motor Delays. Severe jaundice can affect motor skills, muscle tone, and cognitive development.
Early detection and treatment are crucial to prevent these complications, ensuring the baby’s healthy development and well-being.
Causes of Infant Jaundice

Infant jaundice occurs when there is an excessive buildup of bilirubin in the baby’s body. Several factors contribute to this condition:
- Immature Liver. Newborns often have underdeveloped livers, which may not be fully capable of processing and excreting bilirubin efficiently.
- Premature Birth. Premature babies are at higher risk because their livers and digestive systems are even less mature.
- Breastfeeding Issues. Breast milk may contain substances that slow down bilirubin processing, or feeding difficulties may lead to dehydration.
- Infections. Conditions like urinary tract infections or pneumonia can raise bilirubin levels.
- Rh Incompatibility. If the mother is Rh-negative and the baby is Rh-positive, the mother’s immune system may attack the baby’s red blood cells, causing increased bilirubin production.
Understanding these causes helps in the early identification and management of infant jaundice to prevent complications.
Prevention of Infant Jaundice
Taking preventive steps during pregnancy and after birth can significantly reduce the risk of infant jaundice. Understanding these measures helps ensure the baby’s liver can efficiently process bilirubin, thereby minimizing the chances of jaundice development. Below are some precautions that can be taken to help prevent this condition:
- Follow Medical Advice for Blood Testing. Early in pregnancy, it’s important to undergo blood tests to determine if there is Rh or ABO blood type incompatibility. Identifying these risks allows for appropriate preparations, such as administering treatments to reduce the impact on the newborn’s red blood cells.
- Avoid Premature Delivery. One of the best ways to prevent jaundice is to avoid a premature birth. This can be achieved by maintaining a healthy lifestyle throughout pregnancy. Eat nutritious foods, stay hydrated, engage in safe physical activity, and avoid harmful habits such as smoking or alcohol consumption. Additionally, managing stress and avoiding heavy lifting can contribute to a full-term pregnancy, reducing the likelihood of jaundice.
- Frequent Breastfeeding After Birth. Once the baby is born, frequent breastfeeding is one of the simplest and most effective ways to prevent jaundice. Regular feeding helps stimulate bowel movements, which aid in the elimination of bilirubin from the body, thereby reducing its buildup.
By taking these precautions, parents can significantly lower the risk of infant jaundice and promote better liver function and overall health for their newborns. Early intervention and lifestyle choices made during pregnancy play a critical role in ensuring the baby’s well-being.
Risk Factors for Infant Jaundice

While infant jaundice is a common condition, certain factors can significantly increase the likelihood of its occurrence. Understanding these risk factors can help in early detection and management, ensuring that the condition does not progress to more severe complications.
- Premature Birth. Babies born before 37 weeks often have immature livers, making it difficult for them to efficiently process bilirubin. Their digestive systems may also not be fully developed, resulting in slower excretion of bilirubin through bowel movements. Additionally, premature infants may have more red blood cells that are broken down at a faster rate, further increasing bilirubin levels.
- Breastfeeding-Related Jaundice. While breastfeeding has many benefits, it can sometimes lead to temporary jaundice. This type occurs because some substances in breast milk may interfere with the liver’s ability to process bilirubin. However, this is usually not a cause for concern as long as the baby is feeding well and gaining weight.
- Inadequate Breastfeeding. If the newborn is not feeding adequately, it can lead to dehydration and insufficient calorie intake, both of which can slow down the elimination of bilirubin from the body. This may cause higher bilirubin levels and prolonged jaundice.
- Blood Type Incompatibility. When the mother’s blood type differs from the baby’s (such as the mother being type O and the baby being type A or B), it can cause an increased breakdown of red blood cells, leading to higher bilirubin levels. This condition is known as hemolytic disease of the newborn.
- Birth Trauma. Babies who experience bruising or other physical injuries during delivery may have more red blood cells that need to be broken down, leading to higher bilirubin production. Birth trauma can occur due to the use of forceps, vacuum extraction, or prolonged labor.
Recognizing these risk factors allows for more vigilant monitoring and timely intervention, which can help prevent complications such as kernicterus, a severe form of brain damage caused by extremely high levels of bilirubin. Parents should work closely with healthcare providers to manage risk and ensure the baby’s well-being.
Infant Jaundice FAQs
Understanding infant jaundice can help parents better manage and address the condition. Here are some frequently asked questions about infant jaundice:
- What is infant jaundice?
Infant jaundice is a condition where a newborn’s skin and eyes appear yellow due to high levels of bilirubin, a substance produced during the breakdown of red blood cells. - How common is infant jaundice?
It is quite common, affecting about 50-60% of full-term infants and up to 80% of premature babies. - When does jaundice typically appear?
It usually manifests 2 to 4 days after birth, starting on the face and spreading to the rest of the body. - How is infant jaundice diagnosed?
Diagnosis typically involves a physical exam, bilirubin level testing (skin or blood), and sometimes blood type testing if there is suspected incompatibility with the mother’s blood type. - Can infant jaundice be prevented?
Yes, prevention includes avoiding premature delivery, following medical advice for blood tests during pregnancy, and frequent breastfeeding after birth to help eliminate bilirubin. - Is infant jaundice dangerous?
While often harmless, untreated severe jaundice can lead to complications like kernicterus, a form of brain damage. - What treatments are available for infant jaundice?
Treatments may include phototherapy, increased breastfeeding, brief exposure to indirect sunlight, or, in rare cases, a blood transfusion. - When should I seek medical attention for jaundice?
Consult a doctor if jaundice appears within the first 24 hours after birth, gets worse, or lasts beyond two weeks. - Can infant jaundice affect long-term health?
Most cases resolve without long-term effects. However, severe untreated jaundice can lead to lasting complications like hearing loss or developmental delays.
Addressing these common questions can help parents feel more informed and prepared to manage infant jaundice. For any specific concerns, it is always advisable to consult a healthcare professional.