A multidimensional model for understanding cancer pain.

The experience of pain pervades the physical and psychosocial domains of a patient's existence. It has a concrete underpinning in the form of an injury or disease process, yet subjective responses to pain sensations are psychosocial processes that influence the experience of pain and the capacity to cope with it. Anticipation of pain is one of the key fears associated with cancer, and uncontrolled pain strips away morale and quality of life. The interacting biopsychosocial dimensions are important areas for consideration in the comprehensive, skillful approach to assessment and treatment of cancer pain. This article addresses the interactive relationships between pain and mood using the biopsychosocial model as a heuristic for assessment.