Can yellow tongue affect children or infants?

Usually not.: Yellow tongue usually occurs as a result of harmless changes to the tiny projections (papillae) on the surface of the tongue. Most commonly this occurs when the papillae become enlarged and bacteria in the mouth produce colored pigments. Rarely, yellow tongue may be a sign of jaundice, a yellowing of the eyes and skin that may indicate liver or gallbladder problems. Not seen in infants/children.