Pain practice : the official journal of World Institute of Pain
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The aim of our study was translation and assessment of validity and reliability of the Persian version of DN4 questionnaire. The goal was to fill the gap caused by the absence of a validated instrument in Persian to facilitate discrimination of neuropathic pain. In this study, the adaptation and validation of the questionnaire was carried out in 4 steps, including translation, retranslation, semantic, and literal assessments, and a pilot study for practicability and potential perception difficulties of the final Persian version on 45 patient samples. ⋯ Inter-rater agreement and test-retest reliability were significant intraclass coefficient (ICC = 0.957 and ICC = 0.918, respectively). The Persian version of DN4 questionnaire is a reliable, valid, feasible, and easily administered tool for precise discrimination neuropathic pain from NNP in Farsi. The characteristics of this test can assist practitioner to diagnose neuropathic pain accurately for both clinical and research purposes.
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The aim of this study was to investigate the effect of individual pain sensitivity on the results of transforaminal epidural steroid injection (TFESI) for the patients with lumbar spinal stenosis (LSS). Seventy-seven patients with LSS were included in this study. Prospectively planned evaluations were performed twice consecutively before and 2 months after TFESI. ⋯ Before injection, VAS for back pain and leg pain was highly associated with the PSQ scores including total PSQ and PSQ subscores after adjustment for age, BMI, and grade of canal stenosis. However, any subscores of PSQ and total PSQ scores were not correlated with either VAS for back pain/leg pain or ODI 2 months after TFESI with adjustment made to age, BMI, gender, and grade of canal stenosis. This study highlights that individual pain sensitivity does not influence the outcomes of TFESI treatment in patients with LSS, even though pain sensitivity has a significant negative correlation with symptom severity of LSS.