“…Mixed pain conditions, where both neuropathic and nociceptive components are present, can be a diagnostic challenge. Many of our studies excluded participants with mixed pain conditions[7,9,10,29,34,35,40,42,45,48], which may have influenced the sensitivity and specificity of the questionnaires, and hence limit generalisability when applying our results to clinical practice. Of the studies that did include mixed pain in their analysis[8,12,13,23,25,30,32,36,38,41,43,44] there was no consistent trend in increased or decreased sensitivity and/or specificity when compared to the original version.…”