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There have been few randomized controlled studies on the effectiveness of clinical hypnotic analgesia. The authors' goal was to improve on previous methodologies and gain a better understanding of the effects of hypnosis on different components of pain in a clinical setting.This study used a randomized controlled design in which the nurses and data collectors were unaware of treatment condition to compare hypnotic analgesia with an attention-only placebo for burn pain during wound debridements. Data were analyzed on a total of 46 adult participants.The authors found that the group receiving hypnosis had a significant drop in pain compared with the control group when measured by the McGill Pain Questionnaire but not when measured by other pain rating scales.The McGill Pain Questionnaire total score reflects multiple pain components, such as its affective component and various qualitative components, and is not merely a measure of pain intensity. Thus, the findings suggest that hypnosis affects multiple pain domains and that measures that assess these multiple domains may be more sensitive to the effects of hypnotic analgesia treatments.