When the temps are 52 degrees Fahrenheit (11 degrees C) or below, I get cold spots on my hands if I am not wearing gloves. The areas start on the "pinky" side of my palm and if I do not attend to them quickly, my whole hand goes cold and numb. I do not know if this helps. For me, the gloves help, but I have also used immersion. I immerse my hands in cold water and then I will slowly warm them up. Have you tried compresses?