Jaundice causes the skin to appear more yellow, usually starting in the face then spreading to the chest, abdomen, and limbs. It can also cause the whites of the eyes to appear yellow. If the baby is appearing more yellow than her last check-up, you notice that her belly, arms, or legs are yellow, or if her eyes are yellow, talk to her pediatrician, especially if she is acting more fussy, eating less, or harder to wake up.