Six years ago, Donna Poole was diagnosed with a brain aneurysm during a follow-up exam for a stroke she had suffered three years earlier.

Due to unusual symptoms — including pain behind her right eye and ocular migraines — Poole was referred by her family doctor to a specialist who discovered the aneurysm.

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Michigan Medicine neurosurgeon B. Gregory Thompson, M.D., performed surgery to "clip" the aneurysm. During surgical clipping, small metal clips are placed around the base of the aneurysm, essentially depriving an aneurysm of its blood supply and preventing rupture.

Poole was cleared to go home two days later.

Since then, the 70-year-old has remained a diligent promoter of brain aneurysm awareness — not only during Brain Aneurysm Awareness Month each September, but every chance she gets.

She feels a responsibility to represent other brain aneurysm patients, especially those whose outcomes weren't as fortunate.

"I speak for those whose lives ended with a ruptured aneurysm," Poole says. "I speak for those who lived but can no longer talk, read, write, walk or see. I speak for caregivers too weary to talk in any language but tears. I speak for you, because yours may be the next voice silenced."

Her message: Know the risk factors and warning signs of a brain aneurysm.

Signs of a brain aneurysm

A brain, or cerebral, aneurysm is a bulging, weak area in the wall of an artery that supplies blood to the brain. In many cases, a brain aneurysm causes no symptoms and goes undetected until it ruptures.

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Some patients who have experienced a ruptured brain aneurysm report one or more of the following symptoms:   

• Sudden, severe headache that differs from past headaches

• Neck pain

• Nausea and vomiting

• Sensitivity to light

• Fainting or loss of consciousness

• Seizures

• Sudden pain above and behind the eye

• Individuals experiencing some or all of these symptoms should seek immediate medical attention.

Brain aneurysm risk factors

Several factors are known to contribute to a brain aneurysm:

• Family history: People with a family history of brain aneurysms are more likely to have an aneurysm than those who don't. 

• Previous aneurysm: Having a brain aneurysm is more likely to trigger another. 

• Gender: Women are more likely to develop a brain aneurysm.

• Race: Blacks and Hispanics have nearly twice the rate of rupture as whites.

• Smoking: In addition to being a cause of high blood pressure, smoking cigarettes may greatly increase the chances of a brain aneurysm rupturing.

Knowing those risk factors can be key.

About 30,000 brain aneurysm ruptures occur each year in the United States, according to the Brain Aneurysm Foundation. Roughly 40 percent of these cases are fatal, and 4 out of 7 patients who recover will have disabilities.

Life after brain aneurysm

Poole feels she was one of the lucky ones. The Hillsdale, Michigan, resident is happy to talk — even joke — about her experience.

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"Dr. Thompson left 13 pieces of hardware in my head, including three clips," Poole says.

Still, she remains grateful.

"It's Brain Aneurysm Awareness Month," she says, "so as I diligently put the facts on my Facebook profile — one in 50 will have a brain aneurysm — I thank God for Dr. Thompson, the big surgeon with a big heart."