My left fingers starting tingling/prickling and going numb a few years ago but it was on and off and not very often. The past three weeks my entire left arm tingles and goes numb several times a day specifically on the radial side. There is also a burning sensation in my left bicep/tricep area and left shoulder blade area that sometimes happens at the same time. If my arm is out in front of me or if I have my elbow bent and up on desk it will go numb start tingling almost instantly. I thought maybe it was the way I slept one night but it has not subsided. Please advise.