Conditioned Pain Modulation Efficiency Is Associated With Pain Catastrophizing in Patients With Chronic Low Back Pain

This study investigated the difference in CPM response between individuals with chronic low back pain (CLBP) and pain-free controls, and the association between pain catastrophizing and CPM response. Methods: In all, 22 individuals with CLBP and 22 sex-matched and age-matched controls underwent a CPM protocol. Pressure pain thresholds (PPTs) were measured on the lower leg and lower back. The CPM response was registered as the change in PPT from baseline to after a cold pressor test (CPT). Catastrophizing was assessed using the Pain Catastrophizing Scale before the CPM protocol in both groups. Results: Analysis of variance showed no interactions in PPT between groups and test sites at baseline or post-CPT. PPT increased significantly after CPT in the control group (P
Source: The Clinical Journal of Pain - Category: Anesthesiology Tags: Original Articles Source Type: research