Vascular Birthmark: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Vascular Birthmark?
A vascular surgeon treats problems with blood vessels and often cares for deep, large, or problematic birthmarks. Children may also see a pediatric dermatologist or an interventional radiologist, who treats blood vessels using thin tubes and imaging. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
A vascular birthmark comes from blood vessels that did not form the way they should. When too many grow in one spot, the skin can look red, pink, purple, or blue. Some marks are flat and some are raised. One group grows quickly and then shrinks; the other grows as a child grows and does not shrink on its own.
Symptoms
Many vascular birthmarks cause no problems at all. The main sign is the mark itself, which may be red, purple, or bluish. A mark near an eye can affect vision, and one in the mouth or throat can make feeding or breathing harder in babies. If a mark hurts, changes quickly, or bleeds a lot, a doctor should look at it.
Causes and who gets it
Doctors do not know exactly why most vascular birthmarks happen. They are not caused by anything a parent did during pregnancy. Many appear to come from small changes in genes, but most cases are not passed down from parent to child.
How doctors diagnose it
Most vascular birthmarks are diagnosed by looking at the skin and asking about the child's history. Usually no tests are needed. When a mark is large, deep, or in a risky spot, doctors may use ultrasound or MRI to see how far it goes under the skin.
Treatment
Treatment depends on the type of birthmark, where it is, and whether it causes problems. Many need no treatment at all. When care is needed, options include medicines that slow blood vessel growth, laser therapy, surgery, and compression garments.
When to see a doctor
A parent should have any new or changing skin mark checked by a doctor. Sooner attention is needed for a mark near the eye, mouth, or nose; one that bleeds often or forms a sore; or one that grows very fast.
How a direct primary care or concierge doctor fits in
A direct primary care doctor is paid a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can be a good first stop, since they have more time per visit. When a mark is large, deep, or in a risky spot, they refer the patient to a specialist.
Common questions
Do vascular birthmarks go away on their own?
Some do. Infantile hemangiomas often grow for several months and then slowly shrink over years. Other types, such as port-wine stains, which are flat purple marks caused by widened small blood vessels, usually do not fade without treatment.
Can vascular birthmarks be prevented?
No. They are not caused by anything a parent did or did not do during pregnancy. There is no known way to prevent them.
Are vascular birthmarks dangerous?
Most are harmless and cause no health problems. Some need treatment because of where they are, such as near an eye or airway, or because they bleed or grow quickly. A doctor can tell which marks need close watching.
Will my child need surgery?
Not always. Many birthmarks are treated with medicine, laser therapy, or simple watching. Surgery is usually saved for marks that cause problems or do not respond to other treatments.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
