Hi, I'm 57 years old male and probably 30 pounds over weight. I recently lost 30 lbs and have 30 more to go. Thursday I started experiencing stabbing, tingling pain in my left shoulder, neck and chest. Sometimes the pain starts in the neck and radiates down and sometimes it starts in my chest and goes up. Here's an example of the pain: If you ever had a TENS unit on and were sitting comfortably at level 5 and then for 1-2 seconds it get turned up to 10. Very sudden and very severe. I got a Rx called in on Friday for cyclobenzaprine (10mg) 3x daily as needed. I don't think its helping.