Try googling "cradle cap" and see if you can find a photo of it. Here is a description:
"The red, flaky pieces of scalp that looks like dandruff on your baby is called 'cradle cap.' Initially, you'll notice the redness of your baby's scalp, and it sometimes can extend on the creases of the neck, behind the ears, armpits, face, and even in the diaper area.
"Cradle cap is not a serious problem, but still it is bothersome, especially to the parents.