Newborn Jaundice: Why Your Baby’s Skin May Look Yellow and When to Call
You’re getting to know your newborn’s face, feeding cues, and sleepy sounds. Then you notice that their cheeks—or the whites of their eyes—look yellow. Is that expected after birth, or does your baby need to be checked?
Newborn jaundice is common and often improves as babies feed well and their bodies adjust to life outside the womb. But appearance alone can’t tell you whether a bilirubin level is safe. Call your pediatrician the same day if you notice new or increasing yellowing, especially if your baby isn’t feeding well or has fewer wet diapers. Yellowing during the first 24 hours after birth needs immediate medical evaluation.
What causes newborn jaundice?
Jaundice is a yellow color in the skin or whites of the eyes caused by a buildup of bilirubin. Bilirubin is a yellow substance made when the body breaks down red blood cells.
The liver processes bilirubin so it can leave the body, mainly through stool. A newborn’s liver is still getting better at this job, and newborns break down red blood cells faster than older children do. That combination can allow bilirubin to build up.
A common pattern is yellowing that appears after the first day and becomes more noticeable around days three to five—often after a baby has gone home. Still, timing alone doesn’t prove that jaundice is harmless.
Babies born early, babies with significant birth bruising, and babies who aren’t getting enough milk may need closer monitoring. Blood-type differences between a parent and baby, increased red blood cell breakdown, and other health conditions can also contribute.
What might jaundice look like at home?
You may notice yellowing first in your baby’s face or eyes. As jaundice becomes more noticeable, the chest, belly, arms, or legs may also look yellow.
Look at your baby in good natural light, rather than under a yellow-toned lamp. On darker skin, changes may be easier to notice in the whites of the eyes or gums. However, skin color and how far the yellowing spreads cannot reliably tell you the bilirubin level.
Pay attention to the whole picture:
Is your baby waking for feeds and feeding effectively?
Do you hear swallowing during breastfeeding?
Are wet diapers becoming more frequent over the first several days?
Are stools changing from dark, sticky newborn stool toward lighter transitional stools?
Is your baby harder to wake or less interested in feeding than before?
A photograph can sometimes help you describe a change, but it can’t replace an examination or bilirubin measurement.
Newborn jaundice: When to call your pediatrician
Call the same day for new yellowing or feeding concerns
Contact your pediatrician if your baby’s skin or eyes look yellow and you haven’t already received a monitoring plan. Also call if:
The yellow color is becoming deeper or spreading.
Your baby is feeding less, struggling to latch, or repeatedly falling asleep before feeding effectively.
Your baby is sleepier than usual, even if you can still wake them.
Wet diapers are fewer than expected or have decreased.
You missed a planned bilirubin check or newborn follow-up visit.
Don’t wait for the next routine appointment to discuss these changes. If your baby already has a jaundice plan, follow it and report worsening symptoms rather than assuming they can wait until the scheduled recheck.
Get prompt medical evaluation for these signs
Yellowing in the first 24 hours of life needs immediate evaluation. If you’re still in the hospital, tell your nurse right away. If you’re home, contact your pediatrician immediately for instructions; if you can’t reach them promptly, seek emergency care.
White, gray, or very pale stools, or dark urine that stains the diaper, also need prompt medical attention. These can point to a problem beyond the usual newborn adjustment. A photo of the diaper may be useful, but don’t delay calling to collect one.
Seek emergency care now
Take your newborn for immediate medical evaluation if they have:
A rectal temperature of 100.4°F (38°C) or higher.
Marked difficulty waking, unusual limpness, or an inability to feed.
An unusual high-pitched cry along with worsening jaundice or changes in alertness.
Unusual stiffness, backward arching of the neck or body, or seizure-like movements.
Call 911 if your baby is unresponsive, has trouble breathing, turns blue, or is having a seizure. Very high bilirubin can harm the brain, which is why timely testing and treatment matter. You don’t need to know whether jaundice is causing an emergency symptom before getting help.
How do pediatricians check bilirubin?
Babies should have a bilirubin measurement before leaving the birth hospital. A handheld device placed against the skin may be used for screening. A blood test may be needed to confirm the result or guide treatment.
There isn’t one bilirubin number that means the same thing for every newborn. Your pediatrician considers your baby’s age in hours, how early they were born, other risk factors, and whether the level is rising.
Follow-up timing depends on those findings, along with feeding and weight. Some babies need a repeat check the next day; others need a different schedule. Before discharge, ask:
What was my baby’s bilirubin result?
When is the next examination or bilirubin check?
Who should I contact if feeding or yellowing changes?
What can you safely do at home?
Support frequent, effective feeding
Milk intake helps babies pass stool and clear bilirubin. Breastfed newborns generally need to feed eight to twelve times in 24 hours. Formula-fed newborns usually feed every two to three hours at first. Follow your baby’s individual feeding plan, including instructions about waking for feeds.
If breastfeeding hurts, your baby isn’t latching well, or you aren’t sure milk is transferring, ask for feeding support promptly. Jaundice doesn’t automatically mean you need to stop breastfeeding. If extra milk is needed, your pediatrician can help you choose an appropriate plan.
Keep a simple feeding and diaper record
Write down feeds, wet diapers, and stools. By about day five, most newborns should have at least six wet diapers in 24 hours. Earlier expectations vary by day of life, so ask what’s appropriate for your baby. Fewer diapers, poor feeding, or increasing sleepiness deserve a call.
Skip home remedies
Don’t give water or sugar water to treat jaundice. They don’t provide the nutrition your newborn needs and can be unsafe.
Don’t place your baby in direct sunlight or beside a sunny window as treatment. Sun exposure isn’t a reliable substitute for medical care and can cause overheating or sunburn.
What if your baby needs treatment?
Some babies need only feeding support and repeat testing. Others need phototherapy: treatment with special medical lights that help the body remove bilirubin. It may take place in the hospital or, for selected babies, through a prescribed and supervised home program.
Your pediatrician will explain when treatment is needed and how bilirubin will be rechecked. Don’t delay a recommended test or treatment because your baby seems comfortable.
What if you notice yellowing after the office closes?
If you’re home in Medina or elsewhere in West Tennessee and notice more yellowing during an evening feeding, check how your baby is waking, feeding, and wetting diapers. Call your pediatrician’s number and follow any after-hours instructions. Don’t wait until Monday simply because it’s the weekend.
If you can’t reach a clinician and your baby is feeding poorly or becoming unusually sleepy, seek prompt medical evaluation. Emergency warning signs should go straight to emergency care.
How long should newborn jaundice last?
Many cases improve during the first couple of weeks. Some breastfed babies remain mildly yellow longer, even while feeding and growing well. Still, don’t assume persistent yellowing is harmless.
If your baby still looks yellow at two weeks, contact your pediatrician to discuss whether testing is needed. Report pale stools, dark urine, poor feeding, or worsening yellowing sooner.
Bottom Line
Newborn jaundice is common, but checking bilirubin—not judging skin color alone—is how clinicians decide what care a baby needs. Keep follow-up appointments, watch feeding and diapers, and call the same day about new or worsening yellowing. You don’t have to decide on your own whether your newborn’s symptoms are concerning.
The Children’s Clinic
264 Coatsland Drive
Jackson, TN 38301
731-423-1500
Serving children and families in Jackson, Madison County, and communities throughout West Tennessee.
