Beth Israel Lahey Health To spot a stroke, BE FAST! By learning these warning signs, you will be able to respond quickly when someone you know is experiencing a stroke. -Balance loss of balance, headache or dizziness Eyes blurred vision Face one side of the face drooping Arms arm or leg weakness Speech difficulty speaking Time call 911 immediately Beth Israel Lahey Health To spot a stroke , BE FAST ! By learning these warning signs , you will be able to respond quickly when someone you know is experiencing a stroke . -Balance loss of balance , headache or dizziness Eyes blurred vision Face one side of the face drooping Arms arm or leg weakness Speech difficulty speaking Time call 911 immediately