You could be walking around with an unruptured brain aneurysm. But donât panic â the Brain Aneurysm Foundation estimates that about 1 in 50 people in the U.S. has an unruptured brain aneurysm. Director of Endovascular Neurosurgery Koji Ebersole, MD, says people are surprised to learn that the majority of aneurysms donât cause any symptoms.
An aneurysm develops when a vessel in the brain has a thin spot, which then fills with blood, creating a bulge or balloon shape. Most brain aneurysms are small, about the size of a pea. Because the brain itself has no sensory fibers, there is no pain and the brain doesnât register that the aneurysm is there.
âMost patients find out they have an aneurysm for a completely unrelated reason,â Dr. Ebersole says. âMaybe theyâre having trouble with their sinuses and have a CT scan and the doctors find an aneurysm. When you learn you have an aneurysm, itâs important to meet with a physician whoâs practiced in neurology to talk about the implications.â