Neonatal jaundice usually starts to appear 2-3 days after birth, peaks around 5-7 days, gradually decreases after 7 days and disappears at 14 days, which is a relatively common pattern. However, there are several conditions that may cause delayed resolution of jaundice: the first is the more common breast milk jaundice, which usually begins to appear and worsens around 7-14 days after birth, and the child’s general condition is exceptionally good, with a satisfactory weight gain, no fever, no urinary or fecal abnormalities, and no abdominal distension or other abnormalities. This type of jaundice may persist until 6-12 weeks after birth. However, this type of jaundice usually does not affect the child very much and treatment is not considered to be given until more than 15-20 weeks. The second condition is jaundice in preterm babies, which recedes later, but jaundice in preterm babies is treated more aggressively. If jaundice occurs in a preterm child, it is advisable to analyze and evaluate the condition face-to-face with a doctor. The third case is jaundice caused by infections or other diseases, which will only subside after active treatment of the original disease.