How can I distinguish between normal and dangerous jaundice in newborns?

Jaundice is a common condition in newborns that causes yellowing of the skin, eyes, and mouth [4]. This yellowing occurs due to the buildup of bilirubin in the blood, a substance produced by the normal breakdown of old red blood cells [2]. The liver typically removes bilirubin from the body, but in the first days after birth, a newborn's liver may not be fully developed to perform this function efficiently, leading to elevated bilirubin levels and the appearance of jaundice [2]. Although most cases of jaundice are benign and resolve spontaneously, very high levels of bilirubin can cause brain damage if left untreated [2].

Why is relying on visual inspection alone difficult?

It is important to know that the severity of jaundice cannot be determined simply by looking at the color of a baby's skin, especially in infants with darker skin tones [2]. Yellowing may be more noticeable in bright light or sunlight, and gently pressing on the tip of the baby's nose or forehead may make the yellowing easier to see [4]. However, an accurate assessment of bilirubin levels requires a medical examination, such as a blood test or the use of a special device placed on the skin [4]. These tests are essential to ensure there are no dangerous levels of bilirubin that may require medical intervention [2].

Normal (Physiological) Jaundice: When does it appear and disappear?

Normal jaundice is part of the infant's adaptation process after birth. In most babies, yellowing is most noticeable when the child is about 3 days old and usually takes about two weeks to disappear [4]. In these cases, the baby's liver begins to work more efficiently to remove bilirubin, and the child usually does not need treatment [2]. However, encouraging the baby to feed regularly (about 8 to 12 times per day) can help them improve faster. If the baby is sleepy, you should try to wake them for feedings [4].

Signs of jaundice that require concern and immediate intervention

There are some signs indicating that jaundice may be dangerous and requires urgent medical evaluation. You should seek an urgent appointment with your doctor or midwife if your baby is older than 24 hours and you think they have jaundice, if jaundice has been diagnosed and is not improving or is worsening, or if the baby's urine is dark yellow or brown, or their stools are pale and cream-colored [4]. Other symptoms require immediate action and a visit to the emergency department if your baby has jaundice and is: sleepier than usual or difficult to wake, not feeding, floppy or stiff, having twitching or jerking movements, has a high temperature (38°C or higher) or a low temperature (36°C or lower), has not produced any wet diapers, or has difficulty breathing [4]. Additionally, the appearance of jaundice in less than 24 hours of age requires immediate action and medical evaluation [4].

The importance of follow-up after birth

If the mother and infant are discharged from the hospital early, especially within 48 hours of birth, jaundice may peak later in the first week [2]. Therefore, it is essential to adhere to follow-up appointments with your healthcare provider, where they can check the level of jaundice through a simple blood test [2]. If jaundice persists longer than expected, or if a baby who did not have jaundice begins to appear yellow after returning home, you must consult your healthcare provider immediately [2]. For more information on other common infant problems, you can visit our article on Common Infant and Newborn Problems (Arabic).

Medical references

• Jaundice in babies - NHS
• What are some of the basics of infant health?
• Common Infant and Newborn Problems