2 Quotes by Patrick Wall

Pain is always accompanied by emotion and meaning so that each pain is unique to the individual. The word pain is used to group together a class of combined sensory-emotional events. The class contains many different types of pain, each of which is a personal, unique experience for the person who suffers.

As with the other conditions described, the natural history of local tissue damage spreads its effect, including pain, to nearby and distant structures by a linked series of separate mechanisms. This is nowhere more clear than in osteoarthritis, in which the disorder starts locally in a joint but spreads to nearby tissue while the nervous system, attempting to immobilize the joint, generates an abnormal gait and posture, which in turn stresses other joints.