This is a big word for a type of birthmark. Birthmarks get their name because they develop on the
skin of babies before or just after they are born. Hemangiomas are a bunch of tiny
blood vessels – that's why they usually look red or purple. These birthmarks
can be very small or quite large and tend to get bigger before they get better. Hemangiomas
don't hurt and usually go away on their own in a couple of years.