A question concerning serious muscle pain,? I've been to five doctors, had all kinds of tests, spent a whole lot of money and no one has a clue, so maybe someone on here might know something.....I have a deep, burning pain in the muscles of my upper back, shoulders and upper arms with shooting pains in my hands from my fingers halfway up my forearms, I have no grip anymore and my hands feel like I'm wearing a pair of boxing gloves,I get intense cramps in my calves, biceps and back, my muscles have no stamina at all. This has been slowly coming on over the last ten years or so, getting much worse in the last year....I am a 48 yr old male, construction worker, physically active, don't smoke, don't drink, eat right, take vitamins and work out,.... I've been to an internist,a rheumatologist, 2 neurologists, and a diagnostic clinic. So far no one has a clue,so I'm wondering if anyone here might know of something, maybe my doctors are looking in the wrong place. Thanks for your answers.

Summarized question: What causes muscle pain in the upper back, shoulders and upper arms?