A hemangioma is a birthmark caused by abnormal blood vessels under the skin. Types of hemangioma include stork marks (small, flat, pink or red patches); strawberry marks (raised, bright red marks); and port-wine stains (flat, red or purple patches). Stork marks and strawberry marks usually disappear by themselves.
Port-wine stains are usually permanent.
Hemangiomas do not usually need any treatment.
However, one that is very large, bleeds persistently, is near the eye and causing vision problems, or is unsightly may be treated with medication to shrink it or with surgery (such as laser treatment) to remove it.