Arteriovenous malformation

An abnormal connection between arteries and veins, usually in the brain or spine.

Overview

Arteriovenous malformation (AVM) is usually present at birth. The arteries and veins in an AVM can rupture, causing bleeding into the brain or spinal cord.

Symptoms

Symptoms can include headaches and seizures.

Treatments

Surgery is the most common treatment for brain AVMs. In some cases, a catheter or radiation may be used to close off vessels. Medication may be used to treat headaches and seizures.