Neonatal jaundice is the most common phenomenon in the neonatal period, generally divided into physiological jaundice and pathological jaundice. If the baby's values are within the normal range, it may be physiological jaundice, which does not require special intervention and will resolve on its own. Typically, normal physiological jaundice appears 2-3 days after birth, peaks around 4-5 days, begins to lessen about a week later, and resolves within two weeks, generally occurring in full-term infants born after 37 weeks. It's advisable for babies to have their jaundice monitored daily within the first two weeks, especially during the peak period, from 2-3 days to about a week or around ten days, when jaundice monitoring should be more frequent. Normally, it's best if the bilirubin levels in newborns do not exceed 6 mg/dL in the first 24 hours, 9 mg/dL within 24-48 hours, 12 mg/dL within 48-72 hours, and 15 mg/dL after 72 hours. These values are generally considered acceptable. Additionally, jaundice progression should not be too rapid; if bilirubin levels rise more than 5 mg/dL within 24 hours, it indicates too rapid an increase in jaundice. In such cases, it is also necessary to go to the hospital, where a neonatal doctor should assess the baby and decide if special treatment intervention is needed.