Noninvasive approaches to pain control in terminal illness: the contribution of psychological variables.

Pain is a common problem for patients with terminal illnesses. The major efforts to control pain for these patients have focused on the appropriate uses of analgesic medication to reduce the sensory aspect of the pain experienced. There are a number of studies in the chronic pain literature, however, that have implicated the important role of a number of psychological factors in the maintenance and exacerbation of pain. Among the most important variables identified are expectancy, anxiety, perceived controllability, self-efficacy, symptom preoccupation, operant conditioning, classical conditioning, and observational learning. In this paper, these psychological variables are examined and their applicability to patients who have pain associated with terminal illnesses is discussed as well as the implications of these variables for complementary treatment with analgesic medications are described.