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Not only are some clinical conditions experienced as more painful than others, but the variability in pain ratings of patients with the same disease or trauma is enormous. Available evidence indicates that to a large extent these differences reflect individual differences in pain sensitivity. Pain sensitivity can be estimated only through the use of well-controlled experimental pain stimuli. Such...
Large individual differences in pain sensitivity present a challenge for medical diagnosis and may be of importance for the development of chronic pain. Variance in pain sensitivity is partially mediated by genetic factors, but the extent of this contribution is uncertain. We examined cold-pressor pain and contact heat pain in 53 identical (MZ) and 39 fraternal (DZ) twin pairs, and 4 single twins...
Heat induced pain has been shown to follow a positively accelerating power function for groups of subjects, yet the extent to which this applies to individual subjects is unknown. Statistical methods were developed for assessing the goodness of fit and reliability of the power function for data from individual subjects with the aim of using such functions for characterizing individual differences...
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