I have had pulmonary sarcoidosis for 27 years. It has also been diagnosed in my liver and pituitary gland. Within the past few years a rheum doctor said that I had sarcoid arthritis. I have much neck and back pain, and the MRIs show disk degeneration and bulging. How can you tell if the spinal arthritis and other symptoms are caused by the sarcoidosis, and what can be done about it?