I received this information in an e-mail about how to determine whether a person is having a stroke. There are three things to check and they are easy to remember by thinking STR.
S = Smile, have the person smile and notice if it is hard for the person to smile or if it is more lopsided than usual
T = Talk, Ask the person to say a simple sentence such as "Is It raining today?"
R = Raise Arms, Ask the person to raise one arm, than the other arm.
A fourth tip is to ask the person to stick out their tongue. If the person's tongue is crooked rather straight out, that can indicate a stroke.
If you believe that a person has had a stroke, call an ambulance. It has been said that strokes can be reversed if seen by a doctor within a three hour time frame.