Ninety-eight Caucasian patients, 46 Spanish speaking patients, and 50 physicians (mainly rheumatologists) took part in surveys of salient beliefs about arthritis and its treatment. The beliefs of Caucasian patients and those of physicians were similar. However, beliefs of physicians about patients' beliefs and actual patient beliefs diverged as did the beliefs of Caucasian and Spanish speaking patients. These results suggest that arthritis education and treatment should be based on patients' perceptions rather than on physicians' beliefs about patients' perceptions.