Use the following information to answer the following five questions. It has been said that the diagnosis of musculoskeletal pain or dysfunction encompasses not only all of internal medicine but also some elements of neurology and orthopedics. Both pain in the trunk and acral pain can be a manifestation of a rheumatic disorder, neuropathic condition, vascular abnormalities, or diseases of viscera and other sites remote to the area where symptoms are experienced. What does this paragraph point out?