Re: carpol tunnel cause whole arm pain?
You might also want to consider two other things: radial tunnel entrapment, and cubital tunnel syndrome. The radial tunnel nerve might be what is affecting your forearm. The ulnar nerve runs across the back of your elbow (the "funny bone" nerve), down the underside of your arm, and into your pinky and ring fingers.
My symptoms sound so similar to yours. My entire arm (usually from the elbow down) was/is involved, usually ending in my pinky/ring fingers. I had radial tunnel release surgery in June, and am coming up on ulnar nerve transposition surgery in November. My nerve test came back positive (meaning that there is substantial nerve involvement) for the ulnar nerve, but only after the needle version of the test (that sounds bad, but it isn't).
The test came back negative on CTS.
You might want to bring this up with your MD -- and get to an orthopaedist, preferably one that specializes in hands/arms.