IS AN AVM THE SAME THING AS AN ANEURYSM, HEMANGIOMA, CAVERNOMA, VENOUS MALFORMATION OR ANGIOMA?
No, these are other lesions of blood vessels that can occur in the brain, but are very different from AVM’s. WHAT CAN AVM’S DO THAT IS BAD? There are basically three things that can happen to an AVM to cause problems: bleeding, seizures, or steal blood from the normal brain. BLEEDING IN THE BRAIN FROM AVM’S The blood vessels that make up an AVM are not normal; they tend to have weaker walls than normal blood vessels. Bleeding occurs when one of these blood vessels ruptures. If this occurs there is usually sudden onset of the worst headache of your life, different than a usual headache. Fortunately when an AVM bleeds it usually stops quickly, perhaps spilling a tablespoon of blood into the brain and then the hole in the vessels seals itself. If bleeding however continues, then it can make the patient much sicker, cause paralysis, blindness, difficulty communicating, thinking, or even threaten life. If an AVM bleeds there is a high risk that it will bleed again in the future, sometime ov
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