Could you have a brain aneurysm and not know it?

While I'm a big fan of WebMD, the title of this slide show makes me wonder about their ethics and sensitivity to people. Are people with a headache, fairly common, to wonder if that means they have a life threatening aneurysm. That's a risk of 0.001%. The slide show is excellent, but like most medical students, we eventually learn that it's just a headache and not an aneurysm. BRAIN ANEURYSM