Hemangiomas , commonly called strawberry marks, are a collection of dilated capillaries that appear as bumpy, red blemishes. Most strawberries appear in infants, increase in size for a time, then shrink gradually and often disappear altogether. Port wine stains are enlarged blood vessels under the skin that produce reddish to purplish discoloration of the skin, most often on the face. Port wine stains are present at birth, appearing in 3 out of 1,000 people. As the child grows, the birthmark will deepen in color and increase in size.
Moles usually appear after birth.
Those that appear at birth have a higher risk of becoming skin cancer, especially if it covers a large area. Lentigines , also called age spots or liver spots, are harmless, oversized freckles. They appear as a result of aging and exposure to the sun. Rosacea is distinguished by small, reddish bumps on the face that develop in middle aged individuals. Rhinophyma , or red-nose syndrome, is a severe form of rosacea localized on the nose.