what are the early signs of having a stroke?
['Sudden NUMBNESS or weakness of face, arm, or leg, especially on one side of the body.', 'Sudden CONFUSION, trouble speaking or understanding speech.', 'Sudden TROUBLE SEEING in one or both eyes.', 'Sudden TROUBLE WALKING, dizziness, loss of balance or coordination.', 'Sudden SEVERE HEADACHE with no known cause.']