Sudden Numbness

Paralysis or numbness of the face, arm or leg. You may develop sudden numbness, weakness or paralysis in your face, arm or leg, especially on one side of your body. Try to raise both your arms over your head at the same time. If one arm begins to fall, you may be having a stroke. Similarly, one side of your mouth may droop when you try to smile.

Seek immediate medical attention. Call 911 or your local emergency number. Don’t wait to see if symptoms go away. The longer a stroke goes untreated, the greater the potential for brain damage and disability.

http://www.webmd.com/stroke/tc/stroke-symptoms

http://www.mayoclinic.com/health/stroke/DS00150/DSECTION=symptoms