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Arteriovenous Malformations (AVM)

Arteriovenous malformations, called “AVMs” for short, are clumps of abnormal blood vessels. People can have AVMs in different places in their body. AVMs in the brain usually form before a person is born. They are rare, but they can cause serious symptoms or problems. These can happen if an AVM pushes on the brain or keeps part of the brain from getting enough oxygen. An AVM can also sometimes tear open and bleed into the brain. This happens because the blood vessels in an AVM are not as strong as normal blood vessels. A severe bleed in the brain can cause brain injury and death