For the past week and a half, I have had a fever, sore throat, headache, eye ache, swollen lympe noids, half plugged nose, dark urine and left wrist tingly/ numb. When ever I run and swing my left arm back and forth (elbow bent at 90 degrees) the whole arm does numb. When my hand left hand goes numb in turns blanche with red splotches, then when numbness goes away the fingers on my left hand are very stiff. What could it be? What should I do? How can I prevent it?