The mother of a 4-day-old calls the pediatrician's office because she is concerned about her infant's skin. Which finding needs to be reported promptly to the child's pediatrician?

There is a small pink patch on the left eyelid and one on the neck.

Skin is peeling on several parts of the infant's body.

Today, the infant's skin has a yellowish tinge.

The hands and feet feel cooler than the rest of the body.