Seek urgent assessment for early newborn jaundice or warning signs; pale stools also need prompt evaluation

Cost: The source estimates consultation and bilirubin testing within several hundred yuan and describes hospital phototherapy often lasting around two days. These are illustrative source estimates, not guaranteed fees or treatment duration. Getting assessed while a baby otherwise seems well can be difficult.

In plain language: Some jaundice is common in newborns, but jaundice before 24 hours of age, unusual sleepiness or difficulty waking, poor feeding, limpness, stiffness or twitching requires urgent care. Worsening or persistent jaundice, dark urine or pale cream-coloured stools also needs prompt assessment. High bilirubin can cause permanent neurological injury.

Guidance described by the source: The AAP 2022 guideline, for infants born at 35 weeks or later, states that over 80% of newborns have some jaundice. Very high bilirubin can cause acute bilirubin encephalopathy and kernicterus, a permanently disabling neurological disorder associated with involuntary-movement cerebral palsy, impaired upward gaze, enamel abnormalities and hearing loss. Jaundice in the first 24 hours is a risk factor for severe disease. The cited NHS parent guidance separates emergency signs—jaundice before 24 hours, or jaundice with difficulty waking, poor feeding, limpness, stiffness or twitching—from prompt doctor review for worsening or persistent jaundice after 24 hours, dark urine or pale stools.

Estimates and screening findings reported by the source: A global model estimated around 480,000 newborns with Rh disease or extreme hyperbilirubinaemia in 2010, with 24% mortality and 13% developing kernicterus. More than 83% of kernicterus survivors had at least one impairment. These figures concern severe conditions, not all jaundiced babies. Pale stools can indicate biliary atresia; the source emphasizes better outcomes when Kasai surgery occurs within 60 days. Taiwan introduced stool-colour cards in infant health booklets from 2004. Surgery within 60 days increased from 60% in 2004 to 74.3% in 2005. A separate nationwide study associated card introduction with mortality decreasing from 26.2% to 15.9%. These were before-and-after comparisons, not randomized trials.

Source author's evidence grade: B; not site verification or professional approval.

Notes: Phototherapy uses special light to help bilirubin become easier to eliminate. The source cites AAP advice against substituting home sunlight because safe exposure without burns is difficult, and against water or glucose water as jaundice treatment. Appearance alone cannot reliably estimate bilirubin; NICE cautions against relying solely on visual inspection. Birth before 38 weeks, a sibling needing phototherapy and inadequate breastfeeding increase risk. The cited Chinese public-health program includes a home visit within a week after discharge and a community follow-up at 28–30 days, both including jaundice assessment. Follow any separately scheduled bilirubin check. NICE describes conjugated-bilirubin testing and stool assessment for jaundice lasting over 14 days in term babies or over 21 days in preterm babies. For vaccination and newborn screening, see this chapter's entry 3 and chapter 27, entry 13.

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