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Vascular malformations of the brain

A guide for patients and carers

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Common questions about vascular malformations of the brain

This page contains answers to some of the most common questions about vascular malformations of the brain.

Could I have prevented my vascular malformation?

No. We have not established clear risk factors for vascular malformations of the brain in the way that, for instance, smoking has been established as a risk factor for lung cancer.

Are there warning signs?

No. Most people experience no warning signs before the onset of their symptoms and many people do not experience any symptoms.

Are my family at risk?

There is no known risk of inheriting AVMs, apart from the condition hereditary haemorrhagic telangiectasia (HHT).

A genetic cause has been established for cavernous malformations in some families. This is very unlikely if you only have one cavernous malformation.

How common are vascular malformations of the brain?

AVMs and cavernous malformations are uncommon and affect less than 1% of the population.

Apart from the genetic form of cavernous malformations which is more common in the Hispanic community of New Mexico, vascular malformations do not appear to be more common in certain countries or races. Men and women are affected equally.

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