Newborn Jaundice: What's Normal, When to Call
My baby looks a little yellow. Is that normal or should I worry?
A yellow tint in the first week is common and often mild, peaking around day 3-5. But you can't tell how high bilirubin is just by looking - especially on darker skin - so every newborn should have a bilirubin level checked before discharge and at the first follow-up. Check the red flags below first, then read the day-by-day.
Call 911 now if
- Your baby has a shrill, high-pitched cry, arches the neck or back, becomes limp or floppy, is stiff or arches backward, is very hard to wake, or stops feeding - these can be signs of dangerously high bilirubin (kernicterus) and need emergency care immediately
- Your baby has a breathing pause longer than about 20 seconds, OR any pause with blue or gray lips, face, or tongue, limpness, or no response, OR turns blue or gray, OR is gasping
- If your baby is not breathing or not responding, call 911 and begin infant CPR now - the 911 dispatcher will talk you through it
- Green or yellow (bile-colored) vomit, blood in vomit or stool, or forceful projectile vomiting after feeds - bile-colored vomit is an emergency, go to the ER now
Call your pediatrician right away if
- A rectal temperature of 100.4F (38C) or higher in a baby under 3 months - this is a medical emergency; call your pediatrician or go to the ER immediately, even if the baby seems otherwise fine
- A low rectal temperature under about 97.7F (36.4C), or your baby is cold, mottled, or hard to warm - this can be a sign of serious infection
- Yellow skin or eyes appear on day 1 (the first 24 hours)
- The yellow spreads to the belly, arms, legs, palms, or soles, or is getting deeper instead of fading
- Your baby is hard to wake, too sleepy to feed, or feeding poorly
- Signs of dehydration - fewer than 6 wet diapers a day, dark concentrated urine, dry mouth, no tears when crying, a sunken soft spot on the head, or unusual sleepiness
- Jaundice lasting longer than 2 weeks, OR pale, clay-colored, or white stools, OR dark, tea-colored urine - this needs prompt testing
- Grunting with each breath, nostril flaring, chest or rib retractions, or fast breathing
What to expect, day by day
- Yellow skin or eyes on the first day is not typical
- Jaundice this early should be checked the same day
If you see yellow on day 1, just call - it is the simplest next step.
- A mild yellow tint often starts now, usually on the face first
- Most babies have a bilirubin level checked before leaving the hospital
This is the most common time for mild jaundice to appear.
- Jaundice usually peaks here
- Keep feeding often and watch how far the yellow spreads
- Follow-up timing depends on the measured bilirubin level and your baby's risk factors - keep the visit your pediatrician set
A peak is the normal high point before it fades - but only a measured level, not the look of the skin, tells you if it is safe.
- In most babies the yellow slowly fades
- If it is still there after 2 weeks, call your pediatrician - prolonged jaundice needs testing, especially with pale stools or dark urine
Slow fading is the usual path, but lasting jaundice is worth a prompt call rather than a wait.
How to check at home
- Step 1Use natural daylight near a window. Indoor light can hide or fake a yellow tint.
- Step 2Gently press a fingertip on your baby's forehead or nose, then lift. Look at the skin as it un-blanches.
- Step 3If that spot looks yellow, the jaundice is showing. Note how low it goes - face only, or down to the chest, belly, arms, or legs.
- Step 4Check the whites of the eyes and the gums too. The more the yellow spreads down the body, the more reason to call. Home checks help you decide when to call - they do not replace a measured bilirubin level.
Feeding helps clear it
- Feed often - aim for 8 to 12 times in 24 hours in the first weeks
- Watch for at least 6 wet diapers a day after day 4-5
- Stools should change from dark to yellow and soft - pale, clay-colored, or white stools are not normal, call your pediatrician
- Most newborns can be roused to feed. A baby you cannot fully wake, who won't feed, or who feeds very weakly is not just sleepy - call your pediatrician
- If breastfeeding feels hard or supply is low, ask about a lactation visit
Most newborn jaundice is mild and clears on its own once a measured level confirms it is safe. When you are unsure, calling your pediatrician is never the wrong move - and for the emergency signs above, do not wait for a callback.
Quick answers
- Does putting my baby in sunlight cure jaundice?
- No. Direct sunlight is not a safe or proven treatment and risks sunburn and overheating. Sunlight through a window is also not a treatment - if bilirubin is high, only medical phototherapy is proven and safe. Frequent feeding is the helpful thing you can do at home.
- Can I keep breastfeeding if my baby has jaundice?
- Yes, in almost all cases keep breastfeeding. Feeding often actually helps clear jaundice. If feeding is going poorly or your baby seems dehydrated, call your pediatrician and ask about lactation support.
- How do I know if it is getting worse instead of better?
- Check daily in daylight by pressing the skin. Worsening usually means the yellow is spreading down toward the belly, arms, and legs, or your baby is feeding poorly and very sleepy. But you cannot judge how high bilirubin is by eye, so jaundice lasting past 2 weeks, pale stools, or dark urine all need a prompt call for testing. If you see that, call your pediatrician.
Reflects the AAP 2022 clinical practice guideline on newborn hyperbilirubinemia (35+ weeks).
Sources & further reading
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App Store Google Play Open Web AppThis guide reflects current AAP and CDC guidance and is for educational purposes only. It does not constitute medical advice. ParentFlow is a wellness companion — not a substitute for your pediatrician. For any medical concern, contact your healthcare provider.