AVM Symptoms

AVM Symptoms

Most people with AVMs have no symptoms. Often, they are found when patients are screened for another condition, and an AVM becomes visible on a CT scan or an MRI.

Symptoms do occur in about 12 percent of people with AVMs. These are typically seen between the ages of 10 and 30 and can include:

  • sudden and severe headaches or seizures
  • muscle weakness or paralysis
  • numbness and tingling
  • problems with vision, language use, coordination, or memory

Most of these problems results from direct hemorrhage from AVM or seizures caused by the AVM. Some of these problems result from the "steal effect."

In these cases, a very large AVM with a high blood flow will “steal” blood from other areas of the brain, causing decreased function in those areas. Symptoms from the steal effect are rare however.

Contact Information

Swedish Cerebrovascular Center
550 17th Avenue
Suite 110
Seattle, WA 98122
Phone: 206-320-3470
Fax: 206-320-3471
Map & Directions

Video Library

Patient Education: Brain Aneurysms


What Is a Cerebral Aneurysm?

What Causes Cerebral Aneurysms?

Warning Signs and Symptoms of Aneurysms

What Are Aneurysm Treatments?

What Is Aneurysm Clipping?

What Is Aneurysm Coiling?

The Advantages of Choosing Swedish to Treat Aneurysms

CME Video Library


How you can help

Swedish is constantly working to ensure patients with debilitating neurological disorders have access to the best treatment options, the latest technology, and state-of-the-art facilities.

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