Most moles are harmless, but it's important to look out for changes in color, shape and size. These moles often start out flat and become slightly larger and more raised. Between 1 and 3 percent of babies have moles that are present at birth, which are called congenital nevi, or birthmark moles. Many moles don't show up until a child is a few years old. Some can appear flesh-colored at first, but darken and get bigger over time. Moles vary in size and may be flat or raised, black or brown, red or pink, hairy or not. Moles: Clusters of pigment-making skin cells.Most are harmless, but multiple or very large café au lait spots may be a sign of disease, so ask a dermatologist or pediatrician to check them out. They usually fade or get smaller as a child grows, although they may darken with sun exposure. Between 20 and 30 percent of people have these pigmented birthmarks. Café au lait spots: Tan or light brown flat patches that sometimes appear in multiples.Nevus simplex on the face usually disappear by the time your baby is a toddler, although stork bites may remain. Those between the eyebrows are sometimes called angel kisses. The ones on the back of the neck are often called stork bites. They're typically located somewhere on the face or back of the neck. These birthmarks can become more noticeable when your baby cries or when there's a change in temperature. This is the most common type of birthmark, with up to 80 percent of babies having one or more. Nevus simplex, " stork bites," "angel kisses," "salmon patch" marks: Blotchy pink, red or purple flat marks that are formed by dilated capillaries near the surface of the skin.Some birthmarks are referred to by the medical term nevi ("nevus" is the singular). Birthmarks come in a wide range of shapes, sizes, and colors, and they can show up anywhere on the body. And about 2 in 10,000 children are born with a rare tangle of veins in the skin called venous malformations. Up to 5 percent have benign growths called infantile hemangiomas. Between 1 and 3 percent of newborns have moles at birth or within the first year of life. Other birthmarks are slightly less common. Most Asian and Black babies and almost half of Hispanic babies are born with a type of pigmented birth mark called dermal melanocytosis (previously but no longer referred to as "Mongolian spots") that often fade by the toddler years. Vascular-type birthmarks called "stork bites," for example, show up on as many as 80 percent of babies. Not everyone has a birthmark, but birthmarks are extremely common in newborns. However, get the birthmark checked out by a dermatologist to make sure it won't grow and cause problems for your baby and that it's not a sign of skin disease. If your baby has a birthmark, don't worry.
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