Section One Preclinical Data -- I. The Anatomy of Pain Pathways -- II. The Cutaneous Receptor and the Concept of โ{128}{156}Specificityโ{128}{157} -- III. The Physiology of Pain -- IV. The Psychology of Pain -- Section Two Clinical Syndromes -- V. Causalgia and Reflex Paralysis -- VI. Minor Causalgia -- VII. Post-traumatic Pain Syndromes -- VIII. Chronic Low Back Disability -- IX. Facial Neuralgias -- X. Phantom Limb Pain -- XI. Technic -- Section Three Interpretations -- XII. Protopathic Pain -- XIII. Hyperalgesia -- XIV. The Sympathetic Component -- XV. The Vicious Circle -- Summary