Newborn jaundice is a common condition that causes a baby’s skin and the whites of their eyes to appear yellow. It usually develops during the first few days after birth and often improves as the baby’s liver matures. However, some babies develop high levels of bilirubin that require medical treatment. For new parents, understanding jaundice in newborn babies is important because early recognition and appropriate medical care can help prevent complications.
In this guide, we will explain what newborn jaundice is, its common causes, jaundice symptoms in babies, how doctors diagnose the condition, and the available newborn jaundice treatment options.
What Is Newborn Jaundice?
Newborn jaundice, also known as neonatal jaundice, occurs when a substance called bilirubin builds up in a baby’s blood. Bilirubin is a yellow pigment produced when the body breaks down old red blood cells. Normally, the liver processes bilirubin so that the body can remove it through bowel movements. However, a newborn’s liver is still developing and may not remove bilirubin efficiently during the first few days of life.
As bilirubin levels increase, the baby’s skin and the whites of their eyes may turn yellow. Jaundice is common in newborns and is often temporary. Nevertheless, parents should contact a healthcare professional if they notice yellowing because a bilirubin test may be needed to determine whether treatment is required.
What Causes Jaundice in Newborn Babies?
There are several reasons why newborns may develop jaundice. Most cases occur because the baby’s liver is still maturing, but other medical factors can also contribute.
1. An Immature Liver
A newborn’s liver may not be fully developed enough to process bilirubin quickly. This can cause bilirubin to accumulate in the blood, leading to what is commonly called physiological jaundice.
2. Premature Birth
Babies born before 37 weeks of pregnancy have less mature livers and may have difficulty removing bilirubin. Premature babies may therefore need closer monitoring.
3. Breastfeeding and Feeding Difficulties
Some babies develop jaundice when they do not receive enough milk during the first days after birth. Inadequate intake can lead to dehydration and fewer bowel movements, making bilirubin removal less efficient.
Breastfeeding can usually continue during jaundice. Parents should seek feeding support if their baby is not latching well or is not feeding frequently enough.
4. Blood Group Incompatibility
Sometimes, a difference between the mother’s and baby’s blood groups causes the baby’s red blood cells to break down more quickly. This can produce higher bilirubin levels and may require prompt treatment.
5. Bruising During Birth
Bruising or a collection of blood under the scalp following delivery can increase the amount of bilirubin produced as the blood breaks down.
6. Infection or Other Medical Conditions
In some cases, jaundice may be associated with an infection, an inherited condition, or a problem affecting the liver or bile flow. These causes require medical assessment and treatment directed at the underlying condition.
What Are the Jaundice Symptoms in Babies?
Recognising jaundice symptoms in babies can help parents seek medical advice early. The most noticeable sign is yellowing of the skin and eyes.
Common symptoms include:
- Yellow skin: Yellowing often begins on the face and may spread to the chest, abdomen, arms, and legs.
- Yellowing of the eyes: The whites of the eyes may appear yellow.
- Yellowing inside the mouth: The gums or the inside of the cheeks may look yellow.
- Dark urine: Urine that is dark yellow or brown can be a warning sign.
- Pale stools: White, chalky, or unusually pale stools require urgent medical assessment.
- Poor feeding: A baby may feed less effectively than usual.
- Unusual sleepiness: The baby may be difficult to wake or less responsive than normal.
Yellowing can be harder to notice on brown or darker skin. Check the whites of the eyes, gums, and skin in good natural light, but do not rely on appearance alone to judge bilirubin levels.
Important: If your newborn develops jaundice during the first 24 hours after birth, seek urgent medical assessment. Also seek immediate help if your baby with jaundice is difficult to wake, refuses feeds, has breathing difficulties, develops a temperature of 38°C or higher, or shows abnormal movements.
When Does Newborn Jaundice Usually Start and Go Away?
Newborn jaundice commonly becomes noticeable between the second and fourth days after birth. In many healthy, full-term babies, it improves within approximately 10–14 days.
However, the duration can vary depending on the baby’s age, feeding, gestational age, bilirubin level, and underlying health.
If jaundice lasts longer than expected, have a healthcare professional assess it. It can sometimes persist longer in breastfed babies or babies born prematurely, but prolonged jaundice should not automatically be assumed to be harmless.
If you notice yellowing, contact your baby’s healthcare provider rather than waiting for it to disappear on its own.
How Is Newborn Jaundice Diagnosed?
Doctors and other healthcare professionals assess jaundice by examining the baby and measuring bilirubin levels when indicated.
Physical Examination
The healthcare professional checks the baby’s skin, eyes, feeding, alertness, and general health. Visual examination can identify possible jaundice, but it cannot reliably determine the bilirubin level.
Bilirubin Test
Bilirubin can be measured using:
- A skin test: A special device placed against the baby’s skin estimates the bilirubin level without taking blood.
- A blood test: A blood sample measures bilirubin more directly and may be required to confirm a result or guide treatment.
Results are interpreted according to the baby’s age in hours, gestational age, bilirubin level, and other risk factors.
Additional tests may be needed if the doctor suspects blood group incompatibility, infection, or a liver problem.
What Is the Treatment for Newborn Jaundice?
The appropriate newborn jaundice treatment depends on the baby’s bilirubin level, age, overall health, and the underlying cause.
Many babies have mild jaundice that improves without specific treatment. Others require medical intervention to reduce bilirubin and prevent complications.
1. Frequent Feeding
Regular feeding helps provide adequate fluid and nutrition while encouraging bowel movements, which help the body remove bilirubin.
For breastfeeding babies, frequent feeds and professional lactation support can help establish effective feeding. Many newborns feed around 8–12 times in 24 hours.
If your baby is too sleepy to feed effectively, has fewer wet diapers than expected, or is not gaining weight appropriately, seek medical advice.
Do not give water, sugar water, or herbal remedies to treat jaundice. Supplementary feeding should be discussed with a healthcare professional.
2. Phototherapy
Phototherapy is a common newborn jaundice treatment when bilirubin reaches a level requiring intervention.
During phototherapy, the baby is placed under a special medical light that helps change bilirubin into forms the body can remove more easily.
During treatment, healthcare professionals monitor the baby’s temperature, hydration, and bilirubin levels. Feeding, nappy changes, and cuddles can usually continue during routine phototherapy, following the clinical team’s instructions.
The duration varies. Some babies need approximately a day or two, while others may need longer depending on their response.
3. Treating the Underlying Cause
If jaundice is related to an infection, blood group incompatibility, or another medical condition, the baby may need additional treatment.
The medical team will determine which tests and treatments are appropriate based on the diagnosis.
4. Exchange Transfusion
In rare, severe cases, bilirubin levels may become dangerously high or fail to respond adequately to intensive treatment. An exchange transfusion may then be necessary.
This hospital procedure replaces some of the baby’s blood with donor blood to rapidly reduce bilirubin and address certain causes of excessive red blood cell breakdown.
It is reserved for serious cases and is performed by a specialist medical team.
Can Sunlight Treat Newborn Jaundice?
Do not use direct sunlight as a treatment for newborn jaundice. Sunlight exposure is difficult to control and may cause overheating, sunburn, or other harm.
If your baby appears jaundiced, seek medical advice so bilirubin levels can be assessed and appropriate treatment arranged.
Can Newborn Jaundice Be Prevented?
Not all cases of newborn jaundice can be prevented. However, monitoring and appropriate newborn care can help identify the condition early and reduce the risk of complications.
Parents can take these steps:
- Attend recommended newborn health checks.
- Feed the baby regularly and seek help if feeding is difficult.
- Monitor wet diapers and bowel movements.
- Follow recommendations for bilirubin testing, especially if the baby has known risk factors.
- Tell your healthcare provider if a previous child needed treatment for jaundice.
- Seek medical advice promptly if yellowing appears or worsens.
- Babies born prematurely or with certain medical risk factors may need closer monitoring after birth.
What Happens If Newborn Jaundice Is Left Untreated?
Most cases of newborn jaundice resolve without causing harm. However, very high levels of bilirubin can enter the brain and cause a rare but serious form of brain injury called kernicterus.
Possible warning signs of severe bilirubin-related illness include extreme sleepiness, poor feeding, a high-pitched cry, unusual stiffness or floppiness, and abnormal movements.
This is why early assessment, bilirubin monitoring, and treatment when necessary are important. Seek urgent medical care if your baby develops concerning symptoms.
Conclusion
Newborn jaundice is a common condition that causes yellowing of a baby’s skin and eyes because of increased bilirubin levels. Although it often improves naturally, some babies need medical monitoring or treatment.
Understanding jaundice in newborn babies, recognising jaundice symptoms in babies, and learning about newborn jaundice treatment can help parents make informed decisions about their baby’s care. If you notice yellowing, contact your healthcare professional for advice. Early assessment and appropriate treatment can help protect your baby’s health.
Frequently Asked Questions
1. Is newborn jaundice common?
Yes. Newborn jaundice is common, especially during the first week after birth. It usually occurs because the baby’s liver is still developing and often improves as bilirubin levels fall.
2. What are the first signs of jaundice in a newborn?
The first noticeable sign is usually yellowing of the skin or whites of the eyes. It often begins on the face. Yellowing can be harder to recognise on darker skin, so professional assessment is important.
3. How long does newborn jaundice last?
Many cases improve within 10–14 days, although the duration varies. Jaundice that persists beyond this period should be assessed by a healthcare professional, especially if the baby has dark urine or pale stools.
4. What is the best treatment for newborn jaundice?
Treatment depends on the bilirubin level and the baby’s age and health. Mild cases may only require feeding support and monitoring, while higher levels may require phototherapy. Severe cases occasionally need an exchange transfusion.
5. Can breastfeeding continue if a baby has jaundice?
Yes, breastfeeding can usually continue. Frequent, effective feeding helps the baby receive adequate nutrition and pass stools. Seek professional feeding support if the baby is not feeding well.
6. Is newborn jaundice dangerous?
Most cases are mild, but very high bilirubin levels can cause serious complications if untreated. Prompt medical assessment helps determine whether monitoring or treatment is necessary.
7. When should I take my baby to the doctor for jaundice?
Seek urgent medical assessment if jaundice appears within the first 24 hours. Get immediate medical help if your baby is difficult to wake, refuses feeds, has breathing problems, develops abnormal movements, or has a temperature of 38°C or higher.
8. Can sunlight help reduce newborn jaundice?
Direct sunlight is not a recommended treatment. Medical phototherapy uses controlled light and is given when bilirubin levels indicate that treatment is needed.
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