Brain aneurysm symptoms and treatment

A brain aneurysm is a weak, bulging spot in a blood vessel in the brain. They can grow undetected for years. In fact, some studies suggest 1 in 50 of us have an aneurysm and don’t even know it. But sometimes the arterial walls around an aneurysm can become so thin and weak that they burst, allowing blood to flow into the open spaces around the brain.


Brain Aneurysm Symptoms
A burst aneurysm is a medical emergency. Sometimes an aneurysm displays no symptoms. However, you should call 911 immediately if someone is experiencing these symptoms, as they could indicate a bleeding aneurysm:

  • Severe headache (worst headache of your life)
  • Dilated pupils
  • Double or blurred vision
  • Drooping eyelid
  • Loss of consciousness
  • Nausea or vomiting
  • Seizure
  • Sudden confusion
  • Sudden dizziness
  • Sudden weakness or numbness on one side of the face

Treating Brain Aneurysms

If an aneurysm has been detected but has not ruptured, doctors will weigh the risk of a future break against any risks and complications associated with surgical treatment. Neuroradiology uses high-tech imaging to monitor an aneurysm, monitor growth, and assess treatment.


Once an aneurysm has ruptured, surgical treatment may be necessary to stop the bleed or to prevent a new hemorrhage. Treatment involves blocking or diverting blood flow away from these weak spots to prevent blood from reaching the aneurysm. Depending on the case, minimally invasive neurointervention procedures may be used to repair the area.

Treatment options for aneurysms:
Aneurysm clipping is when a tiny clip is placed over the opening of the aneurysm, preventing further blood from reaching the weakened area of the brain artery.

  • Coil embolization is when a soft wire is coiled into the aneurysm causing blood to clot and seal the aneurysm off from the artery.
  • Liquid embolization is similar to coil embolization, in which a specialized liquid material can be injected into the aneurysm where it will solidify and cut off further blood flow.
  • Pipeline embolization, or flow diverters, is when a metal mesh tube is placed inside the artery, crossing the aneurysm. Blood flood is diverted from the aneurysm and channeled through the mesh tube. 

Endovascular Aneurysm Coiling 

Destination Referral Center

Aurora BayCare is a destination treatment center for certain brain aneurysms. Many aneurysms can be difficult to treat due to their location in the brain or a patient’s other medical conditions. Now, with the region’s largest neurointervention team of specialists at Aurora BayCare, we can offer these life-saving treatments to more patients. To watch testimonials from neuroscience patients treated by Aurora BayCare, visit our Real People, Real Stories in Neuroscience page.

The Region’s Largest Neurointervention Team

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