I was so glad to read this, because I am having terrible pain in my calves and stiffness when I walk, it's like the Tin Man of the Wizard of OZ. I am on 15 mg prednisone and this started about 4 days ago. Up till then, it was pain in my shoulders and overwhelming fatigue. I also have other weird symptoms, like heat radiating from my hands and upper arms. I guess if it's myalgia, it can affect your muscles as well as your joints.... Anyone else experiencing the calf pain or heat in the hands, arms?