What causes a hemangioma?

A hemangioma is made up of extra blood vessels that group together into a dense clump. What causes the vessels to clump isn't known.

Risk factors

Hemangiomas occur more often in babies who are female, white and born prematurely.


Occasionally, a hemangioma can break down and develop a sore. This can lead to pain, bleeding, scarring or infection. Depending on where the hemangioma is situated, it may interfere with your child's vision, breathing, hearing or elimination, but this is rare.

Last updated on 05-01-20

How is a hemangioma diagnosed?

A doctor can usually diagnose a hemangioma just by looking at it. Tests usually aren't needed.

Last updated on 05-01-20

Mayo Clinic. Hemangioma Reference Link

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