This depends on what type of aneurysm, first of all. The symptoms of an aortic aneurysm are chest and/or abdominal tenderness, back pain and feeling a pulsating feeling around the belly button. The symptoms of an unruptured brain aneurysm are fatigue, speech problems, unable to concentrate, loss of balance and changes in behavior. The symptoms of a ruptured brain aneurysm are vomiting, neck pain, dilated pupils, sensitivity to light, loss of sensation and double vision. If you experience any of these symptoms, contact your doctor right away, but if you experience the last list of symptoms, get medical attention immediately.