Shoulder pain that goes to elbow, wrist, cold fingers-what kind of

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injury? Hurts to lift arm.? I've been working out a lot and also doing heavy lifting because I'm moving. I'm sure it's just a strain or something. Hurts when I lift my arm at all (outer area of shoulder muscle) and pain radiates to my elbow and wrist and my hand is definately colder. Did I injure a nerve? Do I use heat or cold?