Intracranial venous malformations are abnormally enlarged veins in your brain. These enlargements aren't likely to cause symptoms or affect how the veins work.
Intracranial venous malformations might remain undetected or be found incidentally when you have a brain-imaging test for another condition.
Most often, this condition doesn't require treatment.
Because you're unlikely to have symptoms of intracranial venous malformations, your doctor might find that you have the condition during testing for other neurological concerns.
You might undergo these imaging tests to diagnose other neurological conditions:
Doctors usually don't treat intracranial venous malformations because they rarely cause symptoms. If you have unrelated symptoms, such as headaches, your doctor might prescribe medications.
Rarely, people who have intracranial venous malformations have seizures or bleeding in the brain (brain hemorrhage). These are usually caused by other vascular malformations that can be found with a venous malformation. Doctors typically treat seizures with medications.
Some hemorrhages require surgery, but many hemorrhages can be treated with medical management and observation in a hospital.
© 1998-2021 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved.