hard to tell from the picture. Does it itch you think? if it doesnt, it could be Nevus simplex. Nevus simplex are flat pink or red birthmarks that up to 80% of babies are born with. They are collections of small, red blood vessels called capillaries. Often, these marks are located on the eyelids, forehead, back of neck, top of head, under the nose, and lower back. If it itches, could be beginning if craddle cap.