PMID- 36716611 OWN - NLM STAT- Publisher LR - 20231022 IS - 1769-7131 (Electronic) IS - 0987-7053 (Linking) VI - 53 IP - 4 DP - 2023 Aug TI - Patients with neuropathic pain from lumbosacral radiculopathy demonstrate similar pressure pain thresholds and conditioned pain modulation to those with fibromyalgia. PG - 102841 LID - S0987-7053(22)00125-3 [pii] LID - 10.1016/j.neucli.2022.102841 [doi] AB - OBJECTIVE: The purpose of the study was to evaluate pain thresholds, impairment of the endogenous pain modulatory system, and self-reported cognitive-emotional and central sensitization-related symptoms among three subject groups: a rarely studied patient cohort with neuropathic pain from lumbosacral radiculopathy (NPLSR), patients with fibromyalgia (FM) and healthy controls (HC). METHODS: Patient-reported pain-related symptomology was evaluated with psychometricallyvalidated questionnaires. Pressure pain threshold (PPT), heat pain threshold (HPT), and cold pain threshold (CPT) were assessed in the low back and contralateral forearm. Conditioned pain modulation (CPM) was evaluated with a recently introduced methodology that accounts for a standard error of measurement. RESULTS: Compared to the HC subjects, the FM and NPLSR subjects had significantly lower pain thresholds and more CPM impairment. No significant differences in PPT and CPM were observed between the FM and NPLSR groups. Significant group differences were found in self-reported symptoms of depression, anxiety, stress, and central sensitization. Self-reported symptom severity increased in a stair-step fashion, with the HC group scoring lowest and FM group scoring highest. CONCLUSION: The NPLSR group manifested CPM dysfunction and pressure hyperalgesia at similar levels to the FM group, indicating that these two chronic pain syndromes, likely based on different pathophysiological mechanisms, in fact share some common pain processing features. However, though both patient groups demonstrated similarities in pain processing, self-reported cognitive-emotional and central sensitization-related symptom severity was significantly higher in the FM cohort, which distinguished them from the chronic NPLSR cohort. CI - Copyright (c) 2022 Elsevier Masson SAS. All rights reserved. FAU - Knezevic, Aleksandar AU - Knezevic A AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. Electronic address: aleksandar.knezevic@mf.uns.ac.rs. FAU - Kovacevic, Milena AU - Kovacevic M AD - Faculty of Medicine University of Novi Sad, Serbia. FAU - Jeremic-Knezevic, Milica AU - Jeremic-Knezevic M AD - Faculty of Medicine University of Novi Sad, Serbia. FAU - Nikolasevic, Zeljka AU - Nikolasevic Z AD - Faculty of Medicine University of Novi Sad, Serbia. FAU - Tomasevic-Todorovic, Snezana AU - Tomasevic-Todorovic S AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Zivanovic, Zeljko AU - Zivanovic Z AD - Faculty of Medicine University of Novi Sad, Serbia; Neurology Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Spasojevic, Tijana AU - Spasojevic T AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Garipi, Enis AU - Garipi E AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Vojnovic, Larisa AU - Vojnovic L AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Popovic, Dunja AU - Popovic D AD - Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia. FAU - Neblett, Randy AU - Neblett R AD - PRIDE Research Foundation, Dallas, TX, USA. LA - eng PT - Journal Article DEP - 20230128 PL - France TA - Neurophysiol Clin JT - Neurophysiologie clinique = Clinical neurophysiology JID - 8804532 SB - IM OTO - NOTNLM OT - Central Sensitization Inventory OT - Chronic pain OT - Conditioned pain modulation OT - Fibromyalgia OT - Lumbar radiculopathy OT - Neuropathic pain OT - Pain thresholds COIS- Declaration of Competing Interest None declared. EDAT- 2023/01/31 06:00 MHDA- 2023/01/31 06:00 CRDT- 2023/01/30 18:11 PHST- 2022/05/07 00:00 [received] PHST- 2022/11/13 00:00 [revised] PHST- 2022/12/17 00:00 [accepted] PHST- 2023/01/31 06:00 [pubmed] PHST- 2023/01/31 06:00 [medline] PHST- 2023/01/30 18:11 [entrez] AID - S0987-7053(22)00125-3 [pii] AID - 10.1016/j.neucli.2022.102841 [doi] PST - ppublish SO - Neurophysiol Clin. 2023 Aug;53(4):102841. doi: 10.1016/j.neucli.2022.102841. Epub 2023 Jan 28.