Hey Oh, I have pins and needles in left arm and hand
• United States
8 Jan 10
It could be many things. Since it's your left arm, it could be a heart attack or at the very least poor circulation that could lead to one. So you really should go to an emergency room. It could be a pinched nerve. It could be that you slept on it wrong. I would try a chiropractor. If that didn't work or made it worse, I'd go to a neurologist.