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Living with Wyburn-Mason syndrome

A condition present from birth in which blood vessels form abnormally in the retina of one eye and part of the brain.

Understanding Wyburn-Mason syndrome

Wyburn-Mason syndrome is a condition in which blood vessels form abnormally in the retina of one eye and a part of the brain.

These tangles are called arteriovenous malformations (AVMs). The condition is present from birth. People may have extra AVMs elsewhere, especially on the face. Symptoms depend on the size, location, and shape of the AVMs, and some people have none.

Signs & symptoms

Some people have no symptoms. GARD lists these possible symptoms:

  • Headaches
  • Vision problems
  • Seizures
  • Weakness on one side of the body (hemiparesis)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with The Aneurysm and AVM Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Where are my AVMs, and how are they monitored?
How can vision be protected or supported?
Which specialists should be on my care team?

Quick facts

GARD says the cause is unknown. The condition is present from birth.

Also known as: bonnet-dechaume-blanc syndrome; cams2; cerebral-retinal arteriovenous aneurysm; cerebrofacial arteriovenous metameric syndrome type 2; wyburn-mason's syndrome

Patient organizations

Source: NIH GARD · Wyburn-Mason syndromeGARD ID 7900 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Wyburn-Mason syndrome.

Explore the Wyburn-Mason syndrome blog

Explore research for Wyburn-Mason syndrome

Explore actively recruiting Wyburn-Mason syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Wyburn-Mason syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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