Jaundice in Newborns: Symptoms, Causes & Treatment

Newborn jaundice is one of the most common conditions affecting babies in the first weeks of life — and while it can look alarming, it is usually harmless and resolves on its own. Understanding what causes it, how to recognize the signs, and when to seek medical help will give you the confidence to handle it calmly.

What Is Newborn Jaundice?

A Very Common Condition

Newborn jaundice — medically known as neonatal jaundice — is a yellowing of a baby's skin and the whites of their eyes. It affects around 60% of full-term newborns and up to 80% of premature babies in the first week of life. In most cases, it is a normal physiological response that requires no treatment.

What Causes the Yellow Color?

The yellowing is caused by a buildup of bilirubin — a yellow pigment produced when red blood cells break down. Newborns have a higher rate of red blood cell turnover than adults, and their immature livers can't always process bilirubin quickly enough, causing it to accumulate in the blood and tissues.

Types of Newborn Jaundice

Physiological Jaundice

The most common type. It typically appears on day 2–3 of life, peaks around day 4–5, and resolves by 2 weeks in full-term babies and 3 weeks in premature babies. No treatment is usually needed beyond regular feeding and monitoring.

Breastfeeding Jaundice

Occurs in the first week when a baby isn't feeding well and isn't getting enough milk. Low milk intake means less bilirubin is excreted through stool. The solution is increasing feeding frequency — not stopping breastfeeding.

Breast Milk Jaundice

A different condition to breastfeeding jaundice. It occurs after the first week and is caused by substances in breast milk that slow bilirubin processing. It can persist for 3–12 weeks but is rarely harmful and usually resolves without intervention.

Pathological Jaundice

Less common but more serious. It appears within the first 24 hours of life and may indicate an underlying condition such as blood group incompatibility, infection, or a liver problem. This type always requires prompt medical evaluation.

Symptoms of Newborn Jaundice

What to Look For

The main symptoms of newborn jaundice include yellowing of the skin (starting at the face and spreading downward), yellowing of the whites of the eyes, dark yellow urine (it should be colorless in newborns), and pale or clay-colored stools. Your baby may also appear unusually sleepy or reluctant to feed.

How to Check at Home

Press gently on your baby's forehead or nose with a finger. If the skin looks yellow when you release, jaundice may be present. Check in natural daylight rather than artificial light for the most accurate assessment. Always follow up with your midwife or pediatrician regardless of what you observe at home.

When to Seek Medical Attention

Warning Signs That Need Immediate Care

Contact your doctor or go to the emergency department immediately if your baby's jaundice appears within the first 24 hours of life, the yellowing spreads to the abdomen, arms, or legs, your baby is difficult to wake, feeding very poorly, making high-pitched cries, or developing a fever above 38°C / 100.4°F. These may indicate severe hyperbilirubinemia, which requires urgent treatment.

Routine Monitoring

Most hospitals check bilirubin levels before discharge. If your baby is discharged early, a follow-up check within 48 hours is important. Your midwife or health visitor will assess jaundice at home visits in the first 10 days.

Treatment Options for Newborn Jaundice

Frequent Feeding

The simplest and most effective first-line approach. Feeding 8–12 times per day encourages more frequent bowel movements, which helps eliminate bilirubin from the body faster. For breastfed babies, increasing feeding frequency is the most important intervention for mild jaundice.

Phototherapy (Light Therapy)

For moderate to high bilirubin levels, phototherapy is the standard medical treatment. Your baby is placed under a special blue-spectrum light (or on a light blanket) that converts bilirubin in the skin into a form that can be excreted in urine. It is safe and effective, typically requiring 1–2 days of treatment.

Exchange Transfusion

Reserved for severe cases where bilirubin reaches dangerously high levels. A small amount of your baby's blood is repeatedly replaced with donor blood to rapidly reduce bilirubin. This is rare and only performed in a neonatal intensive care unit (NICU).

Supporting Your Baby Through Jaundice

Keep Feeding Often

Whether breastfeeding or bottle-feeding, frequent feeds are the single most important thing you can do at home. Wake your baby to feed if necessary — newborns with jaundice can be sleepier than usual and may not signal hunger reliably. Our baby feeding essentials collection has everything you need to support a strong feeding routine from the start.

Skin-to-Skin Contact

Kangaroo care (skin-to-skin holding) supports temperature regulation, breastfeeding, and bonding — all of which indirectly support recovery from jaundice. It's one of the most evidence-backed practices in newborn care.

Monitor at Home

Check your baby's color in natural daylight at each