Neonatal jaundice includes physiological jaundice and pathological jaundice, and the symptoms are mainly manifested as yellowing of the skin, abnormal stools, mental abnormalities and so on. 1. Physiological jaundice: it is a physiological phenomenon characterized by the metabolism of bilirubin in newborn babies, mainly caused by the high concentration of bilirubin in the body, which mainly manifests as yellowing of the skin, including mild yellowing of the skin of the cheeks and the sclera, and the yellowing phenomenon usually subsides on its own without any other uncomfortable symptoms. 2. Pathological jaundice: it may be caused by hemolytic disease of the newborn, infection, erythrocytosis, etc., which often leads to yellowing of the skin, sclera and other organs, and when it is serious, it may also have other manifestations, such as abnormal bowel movement, mental abnormality, and low food intake, etc. If you find newborn jaundice, you need to take prompt action. If jaundice is found in newborns, it is necessary to go to the hospital in time to find out the cause and then target treatment.