Unruptured brain aneurysms usually have no symptoms. Typically, these aneurysms are small. Many unruptured aneurysms are found incidentally when tests are being done to screen for other conditions. 

While it is rare, unruptured aneurysms may become large and press on nerves in the brain, causing symptoms. If you experience these symptoms, seek prompt medical attention. 

• Blurred or double vision 
• A drooping eyelid 
• A dilated pupil 
• Pain above and behind one eye 
• Weakness and/or numbness 

Unruptured aneurysms rarely cause chronic headaches, however acute change in chronic headache pattern with respect to intensity or frequency would be a good reason to reach out to your health care provider.