My lower arms (above but sometimes also the wrist) sometimes ache, it feels like a muscle or bone bruise. When I press it or use it too much it sometimes feel like a prickle or deep itch. It come and goes and seems to sharpen when my arms stay in one spot, like on my laptop. I recently did yard work, but that was 5 days ago. I am also in school so I do a lot of writing 2 days a week. For my right arm this has been going on for years ever since I got injured there a little badly, but there wasn t a big bruise or much swelling. It has only recently been both arms. It might be strain on the left but what is up with my right arm? What is causing the aches and prickles?