Jaundice in babies

Also called Newborn jaundice or Neonatal jaundice

Jaundice is common in newborn babies and causes yellowing of the skin and the whites of the eyes. It usually appears 2 to 3 days after birth and gets better without treatment within 2 weeks. It happens because a baby's liver is not yet mature enough to clear a substance called bilirubin from the blood.

Last updated Nov 9, 2026

What it is

High levels of bilirubin can be harmful, so babies who look yellow should be checked. Treatment with special lights (phototherapy) is often used.

Jaundice that starts in the first 24 hours or lasts more than 2 weeks (3 in premature babies) needs further tests.

Common signs

  • Yellow skin, often starting on the face
  • Yellow whites of the eyes
  • Yellow palms or soles
  • Dark yellow pee or pale poo

How it is usually diagnosed

  • Skin check with a bilirubin meter
  • Blood test for bilirubin

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Bilirubin results
  • Phototherapy notes
  • Baby discharge letters

Questions to ask your doctor

  • Is my baby's bilirubin level safe?
  • Does my baby need phototherapy?
  • What should I watch for at home?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Jaundice in the first 24 hours, a very sleepy or floppy baby, poor feeding, or pale chalky poo: get urgent medical help

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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