They usually disappear in the first four years of life. This is a bright or dark red, raised or swollen, bumpy area that looks like a strawberry. Hemangiomas are formed by a concentration of tiny, immature blood vessels. Most of these occur on the head. They may not appear at birth, but often develop in the first two months.
Strawberry hemangiomas are more common in premature babies and in girls.
These birthmarks often grow in size for several months, and then gradually begin to fade. Nearly all strawberry hemangiomas completely disappear by nine years of age. A port-wine stain is a flat, pink, red, or purple colored birthmark. These are caused by a concentration of dilated tiny blood vessels called capillaries. They usually occur on the head or neck.