Many years ago I was diagnosed with Fibromyalgia, but pain is changing & I have a lot of pain in my right arm & across my collar bone, also dragging pain in my thighs, pain in the back of my neck, pain in lower back & hips, also weight gain. I have been told it could be polymyalgia rheumatica, could this be so? What tests do I need to have a diagnosis? Many thanks, Helen Hearps