By Category Explore the best sites in Waco and around the world. Search 1,000,000 of the world's best sites . Search AccessWaco Suggest a Waco website. There are two main categories of birthmarks.
Red birthmarks are a vascular type of birthmark.
Pigmented birthmarks are areas where the color of the birthmark is different from the color of the rest of the skin. Hemangiomas are a common birthmark. They are usually painless and benign . The cause of hemangioma development is unknown. The color results from a proliferation of blood vessels at the sight.