If my skin touches somethin cold, like if I'm holding a gallon of milk or a cold drink in my hands and it touches my arm, or like yesterday at work, was on the computer, the arm I was using for the mouse, was on the counter, which is marble, and was very cold, my arm it turns bright red an swells up and itches. Never had this happen before, been happenin last couple days. And idea what that is??