Hi, for several days now, I have been experienicing the following symptoms: Pain in left shoulder joint and up my neck, pain down my left arm along with a feeing of tightness and numbness, tightness and numbness in my left hand, also coincidentally, I am having pain the the left calf with numbness, and numbness and tightness in my left foot. I would appreciate any thoughts to what may be the problem. I have had left shoulder bursitis on/off over the past few years from overuse since I am left handed. Thanks!