男,44天。第一胎,足月平产,母乳喂养。生后第4天发现皮肤黄染并渐加重,至病后第10天黄疸为甚,此后有所减轻。不发热,吃奶好,大便黄色。体查:体温37.2℃,皮肤微黄,巩膜明显黄染。II48u,胆红素85.5μmol/L,直接胆红素18.81μmol/L,VDB直接阴性、间接阳性,母婴血 Male, 44 days. The first child, full-term, breastfeeding. On the fourth day after birth, the skin was yellowed and gradually aggravated. Jaundice was observed on the tenth day after the illness and was relieved thereafter. No fever, good milk, yellow stool. Physical examination: body temperature 37.2 ℃, the skin yellowish, scleral obvious yellow dye. II48u, bilirubin 85.5μmol / L, direct bilirubin 18.81μmol / L, VDB direct negative, indirect positive, maternal blood