Oxford handbook of rheumatology
(Print Material)

"When evaluating a person-child or adult-with focal or widespread pain, it is important to consider that the pain may be derived from joints. Sometimes it won't be obvious. MSK pain may arise from joints (disease of synovium, cartilage, or bone) but also entheses, tendons, muscles, or a combination of structures, or can be referred from site to site (usually from proximal to distal), or can be associated with/secondary to neurogenic lesions. Patterns of presentation of pain can be useful pointers to diagnosis"-- Provided by publisher.