Massage Chairs Are Appealing Relief For Pain From Polymyalgia And Fibromyalgia If you suffer from pain in the joints and muscles areas then you may have polymyalgia. If you have stiffness in the ligaments and tendons then you may have fibromyalgia. Although both conditions can cause stiffness and pain, one involves the joints and muscles where as the other involves the ligaments and tendons. The result of either situation is the muscles become tense and stiff. A number of chiropractic d