The dilemma of knowledge whether that nagging pain is originating from bones or muscles can be quite daunting, especially for someone who is been clinically determined to have Rheumatoid Arthritis, recently. Perhaps even for all those individuals who have not been identified as having rheumatoid arthritis, joint and muscle mass aches may be considered the white alarm point. So what are they really and how can they differ? And most notably, how can you notify the big difference between joint pain and muscle pain?