Hello,

I've noticed that when I have my arm resting on a desk, my thumb will tremor or make tiny movements back and forth. It may happen at other times but this is the only time I notice it. I have thought for a while that I have compressed nerves in both arms but EMG says no. When I had my EMG it seemed like they only tested below my elbow. They didn't test across my elbow or my shoulder. Could I have compressed nerves and the EMG didn't pick it up because they didn't test higher up? ( I don't know too much about how EMG's work, maybe they don't need to test higher up? )