However, it is difficult to distinguish neuropathic pain from other types of pain and to diagnose the lesion or disease causing the pain ( 2). Neuropathic pain is diagnosed by an expert physician based on a detailed clinical history, physical exploration, and clinical judgment as well as by electrophysiological examinations and imaging studies as needed ( 2). Neuropathic pain is defined as "a pain caused by a lesion or disease of the somatosensory system" according to the International Association for the Study of Pain ( 1). The Korean version of the LANSS pain scale is a useful, reliable, and valid instrument for screening neuropathic pain from nociceptive pain. With a cut-off score ≥ 12, sensitivity was 72.6%, specificity was 98.0%, and the positive and negative predictive values were 98% and 76%, respectively. The area under the receiver operating characteristic curve was 0.928 with a 95% confidence interval of 0.885-0.959 ( P < 0.001), suggesting good discriminate value.
The Korean version of the scale had good reliability (Cronbach's α coefficient = 0.815, Guttman split-half coefficient = 0.800). The Korean version of the LANSS pain scale was applied to a total of 213 patients who were expertly diagnosed with neuropathic (n = 113) or nociceptive pain (n = 100). The translation and cross-cultural adaptation of the original LANSS pain scale into Korean was established according to the published guidelines. The aim of this study was to develop a Korean version of the Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) pain scale and assess its reliability and validity. Distinction between neuropathic pain and nociceptive pain helps facilitate appropriate management of pain however, diagnosis of neuropathic pain remains a challenge.
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