A hemangioma is a type of birthmark and vascular abnormality and is the most common benign (noncancerous) tumor of the skin. A hemangioma is a noncancerous tumor made up of blood vessels. There are many types of hemangiomas, and most occur on the surface of the skin or just beneath it. They often develop on the face and neck, and can vary greatly in color, shape, and size. A hemangioma is a benign tumor of blood vessels, most commonly seen in children. Having a characteristic clinical appearance of mostly bright red papules or plaques all over the skin surface, hemangiomas are also frequently called strawberry marks. A hemangioma (he-man-jee-O-muh), also known as an infantile hemangioma or hemangioma of infancy, is a bright red birthmark. It looks like a rubbery bump or flat red patch and is made up of extra blood vessels in the skin. The mark shows up at birth or in the first month of life. Hemangiomas are noncancerous growths that form from malfunctioning blood vessels. Learn how they work and what to do about them. A hemangioma is a common vascular birthmark, made of extra blood vessels in the skin. It is a benign (non-cancerous) growth. Hemangiomas may occur anywhere on the body. There are three main types of hemangioma: superficial (on the surface of the skin), deep (under the skin) and mixed. Explore the typical growth patterns of hemangiomas, how they naturally resolve, and when professional guidance is recommended for their development. Know about the hemangioma types, symptoms, causes and treatment. Learn about the diagnosis and lifestyle tips for hemangioma and more. A hemangioma or haemangioma is a usually benign vascular tumor derived from blood vessel cell types. The most common form, seen in infants, is an infantile hemangioma, known colloquially as a strawberry mark , most commonly presenting on the skin at birth or in the first weeks of life. Symptoms of a hemangioma are: A red to reddish-purple, raised growth on the skin A massive, raised, bluish lump with visible blood vessels Most hemangiomas are on the head, neck, or extremities.