What does the doctor say is 18.1 serious?

Baby jaundice 18.1mg/dl is more serious, the child will appear skin yellow dye, sclera yellow dye and muscle tension decline and other symptoms, should be admitted to hospital according to the doctor's advice for blue light irradiation treatment, at the same time should also drink more hot water, every morning afternoon about 20 minutes of sun, can promote jaundice regression.