Severe, sudden headache
Pain above or behind one eye
Blurred or double vision
Drooping eyelid
Dilated pupil
Numbness or weakness on one side of the face or body
Trouble speaking
Loss of balance or coordination
Sudden dizziness
Sudden, severe chest pain
Sudden, severe abdominal pain
Pulsing or throbbing mass in the abdomen
Back pain
Leg pain or numbness
Shortness of breath
Fainting
Symptoms that come on suddenly and worsen quickly
No symptoms at all, especially with small aneurysms
Emergency evaluation if symptoms are sudden or severe