 With heat stroke, you could lose consciousness, you could appear to be drowsy, you could appear to be non-responsive, and what you really want to make sure is that your body temperature doesn't get above 103 orally. And heat stroke is a medical emergency. You should call 911, get the person inside or in the shade, and into a cool shower or bath, or wipe them down continually with a soaked, cool washcloth until paramedics arrive.