Jaundice baby treatment. View of a newborn baby in an incubator undergoing phototherapy to treat jaundice. Neonatal jaundice consists of yellowing of the skin and whites of the eyes due to the accumulation of bilirubin, a bile pigment, in the blood. It is a common condition in newborn babies but rarely requires treatment. The blue light causes the chemical breakdown of bilirubin which is excreted in the urine. Photographed in Iran.