What are flat nipples?
What Are Flat Nipples? Flat nipples are not raised. They appear to lay even with the areola and the surrounding skin of the breast. Flat nipples do not stick outward from the breast, but they don't turn inward either (those are called inverted nipples). What causes flat nipples? Inverted nipples are often congenital, meaning they have been present since birth. This condition may result from milk ducts that do not fully develop or because the nipple base remained small while in the womb.