Pain & Ache In My Upper Arm And Feeling Of Cold.

Pain & ache in my upper arm and feeling of cold Hi, I have noticed an ache in my upper right arm that travel down to my wrist. This started about a week ago, at first I thought it was down to the cold beacuse I sit close to a door at work, but now I find that I m waking up with it. It kind of feels like my arm is too heavy and needs to be supported and warmed up. I do type a lot in my work but I haven t recently changed anything ie seating, desk, keyboard.