Let s talk a little bit about the risk factors for stroke. One of the gentleman in the story was a very young man who had a stroke, and that s not as common. The major risk factors for stroke, the single major risk factor that we can actually impact against, is high blood pressure. But then people who have diabetes or high blood pressure, they may be at risk for stroke. People just as a virtue of their age may be at risk for stroke.
Smoking is a risk for stroke, cholesterol is an indirect risk for stroke.
Younger people may have congenital abnormalities, abnormalities of clotting in their blood that can lead them to a risk for stroke as well. I remember early warning signs that they talked about. The usual presenting symptoms of stroke, of the clotting kind of stroke, are loss of strength or loss of sensation on one side of the body or another, they may complain of loss of vision, they may complain or not be able to complain because they have an inability to use language. Those are really the typical features of stroke. Sometimes when someone has a hemorrhagic stroke they may complain of a terrible severe headache.