What should be done if a newborn baby has high jaundice?

For newborns with high jaundice, the first step is to identify the underlying cause and provide targeted treatment accordingly. Medication may be necessary when indicated; if ineffective, phototherapy with blue light is required. Closely monitor the infant's condition for any signs such as arching of the back, high-pitched crying, or projectile vomiting. It is advisable to give the baby plenty of water to promote excretion. If breastfeeding, mothers should avoid oily, spicy, and irritating foods such as chili peppers and mustard.