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Intracranial arteriovenous malformations (AVMs) are abnormal connections between the arteries and veins in the brain. Most people with brain or spinal AVMs experience few, if any, major symptoms. About 12 percent of people with this condition experience symptoms that vary greatly in severity. Seizures and headaches are the most common symptoms of AVMs but individuals can also experience a wide range of other neurological symptoms. AVMs can cause hemorrhage (bleeding) in the brain, which can be fatal. Symptoms can appear at any age, but are most often noticed when people are in their twenties, thirties, or forties. The cause of AVMs is not yet well understood but it is believed that AVMs result from mistakes that occur during embryonic or fetal development. Medication is used to treat general symptoms such as headache, back pain, and seizures caused by AVMs. However, the best treatment for AVMs is often surgery or sterotactic radiosurgery
Source: GARD Last updated on 07-28-20
While it is possible that having a first degree relative with a brain arteriovenous malformation (AVM) affects your risk for an AVM, this risk is likely very small. Currently the cause of brain AVM's is not known. Likewise, the role specific genes and/or environmental factors play in the development of these malformations is not known. There have been rare reports of brain AVMs occurring in more than one member of the same family. It is not known whether or not these cases were coincidental.
If a relative has more than one AVM, or a history of nose bleeds (or more serious hemorrhage), telangiectasias, and iron deficiency anemia, a diagnosis of the rare genetic syndrome hereditary hemorrhagic telangiectasia (HHT) should be considered. Relatives risk for HHT can be as high as 50% or 1 in 2, however risk for serious events, like stroke, will vary.
Last updated on 05-01-20
While numbness in any part of the body can be a sign of an AVM, we were unable to find information regrading numbness in the arms at night (or while lying down) specifically related to arteriovenous malformation. We recommend that you work with your healthcare providers in determining the cause of your numbness.
Last updated on 05-01-20
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