how to identify a stroke

The next information is somthing I read on the net and I found it very interesting and helpuful.

Sometimes symptoms of a stroke are very easy to identify, but the victim may suffer brain damage if the people who attend fails to recognize the symptoms.

Below are the three steps recomended by doctors to identify a stroke:

1.- Ask the person to smile
2.- Ask the person to raise both arms
3.- Ask the person to say a coherent sentence

If the person has any difficult with anyone of this tests, there is a high probability of having a stroke.

with the previous three tests you can recognize a stroke with three hours of anticipation.