Causes of Neonatal Jaundice Mnemonic: “J.A.U.N.D.I.C.E”

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Causes of Neonatal Jaundice Mnemonic: “J.A.U.N.D.I.C.E”

Welcome to the golden topic — quite literally. ☀️
Neonatal jaundice is that classic yellow flag we all learn to chase early in paeds. And let’s be honest — you haven’t really done a paeds rotation until you’ve had a nervous parent ask, “Doctor sahab, yeh zard kyun ho gaya?”

Luckily, when you’ve been on-call with Dr. Bilal Chaudhary (our no-nonsense Paediatrician), you learn to categorize neonatal jaundice before your coffee even brews. ☕👶

Photo Courtesy: Jaundice in newborns, read more here.

🧠 Mnemonic for Causes of Neonatal Jaundice: “J.A.U.N.D.I.C.E”

Letter Cause Explanation
J Physiological Jaundice Common, benign, appears after 24 hrs, peaks ~day 3. Baby’s liver’s just lazy. 😴
A ABO or Rh Incompatibility Hemolysis due to maternal-fetal blood group mismatch. Think: anti-A/B or anti-D.
U Urinary Tract Infection (UTI) Less common but serious — especially if prolonged jaundice >2 weeks. 🚨
N Neonatal Hepatitis Viral or idiopathic. Often with pale stools, dark urine. Rule out TORCH. 🦠
D Drugs (e.g., oxytocin, sulfonamides) Some drugs in pregnancy can worsen jaundice by displacing bilirubin. 💊
I Infection (Sepsis) Early-onset sepsis can present with jaundice — look for lethargy, poor feeding.
C Cephalohematoma / Bruising Extra RBCs broken down → extra bilirubin. That vacuum delivery has consequences. 🧠
E Enzyme Deficiency (G6PD, galactosemia) Think hemolysis or metabolic error. Test if jaundice is early, severe, or prolonged. 🧪

 

🚼 Case from the Wards: A Neonate from Washuk, Balochistan

One morning, Dr. Bilal and I reviewed a 3-day-old baby from Washuk, brought in for “zard rang” (icterus) since day one. The child was irritable, febrile, and had poor feeding.

Initial thoughts? Physiological jaundice.
But bilirubin was >20 mg/dL on day 2.

A blood group mismatch? Nope.
We ran a sepsis screen — CRP was high. Culture grew E. coli.

Neonatal jaundice secondary to UTI — one of the more easily missed causes.

Started IV antibiotics — baby perked up in 48 hours. A good save. 😌

📚 Quick Tips for Clinical Exams (and Real Life)

🔸 Pathological Jaundice red flags:

  • Appears in <24 hours
  • Bilirubin >5 mg/dL/day rise
  • Direct (conjugated) bilirubin >2 mg/dL
  • Persists >2 weeks

🔸 Conjugated hyperbilirubinemia = ALWAYS pathological!
🔸 Breast milk jaundice = peaks ~2nd week, benign, keep breastfeeding.
🔸 G6PD deficiency = suspect in males, especially if there’s a history of fava beans or naphthalene balls at home

I hope that you find this medical useful in your studies/clinical practice. Happy learning! 🙂

Authored by:

Dr. Aurangzaib Qambrani
MBBS | PLAB | MRCP-UK
General Medicine, Gastroenterology & CCU
Sheikh Khalifa Bin Zayed Hospital, Quetta 🏥

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