The author believes that there are two concepts against which the student should be thoroughly immunized. The first is the idea that one must be dealing with a psychoneurosis if the origin of a pain cannot be established. The other is the defeatist viewpoint expressed by telling the patient that he will just have to live with his pain. The physician should determine whether a certain painful syndrome is of peripheral origin, such as that caused by the pressure of a herniated nucleus pulposus on a nerve root, or if is of central origin and within the domain of the neurologist and neurosurgeon. Pain speaks its own language. If pain is premonitory of a presenting sign, a careful analysis may reveal the condition while it is still in a reversible stage.
The broad coverage of this subject is indicated by the following list of subjects discussed: the perception, conduction, allocation,