Articles: acute-pain.
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Pain typically accompanies acute herpes zoster and persists well beyond rash healing. Different types of pain are reported by patients with herpes zoster. Current studies show that these types of pain vary with respect to their presence, location, duration, intensity and quality, hence pain needs to be analyzed more thoroughly. ⋯ The results have shown that the patients report about spontaneous pain mostly in terms of the following qualities of high level pain intensity: throbbing, aching, hot-burning and sharp. The results also demonstrate that herpes zoster pain significantly affects the patients' everyday living quality and their emotional health. Comprehensive assessment of pain is necessary for clinical research about the epidemiology, natural history, pathophysiologic mechanisms, treatment, and prevention of pain in herpes zoster.
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Given the inherent variability in pain responding, using an "average" pain score may pose serious threats to internal and external validity. Using growth mixture modeling (GMM), this article first examines whether infants can be differentiated into stable groups based on their pain response patterns over a 2-minute post-needle period. Secondary analyses, to specifically address the issue of averaging pain scores to represent a sample, qualitatively described clinically meaningful differences between pain scores of the discerned groups and the overall mean (irrespective of groups). ⋯ Our secondary suggested that the overall mean pain score immediately post-needle reflected most groups well at every age. However, for older infants (6 and 12months, especially), the overall mean pain responses at 1 and 2minutes post-needle significantly over or underestimated groups that contained 48% to 100% of the sample. These results combined highlight the significant variability of infant pain responding patterns between groups of infants and furthermore, calls into question the validity of using an overall mean in research with older infants during the regulatory phase post-needle.