• Isabelle Rouch, Jean-Michel Dorey, StrippoliMarie-Pierre FMFDepartment of Psychiatry, Center for Research in Psychiatric Epidemiology and Psychopathology (CEPP), Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland., Mehdi Gholam, Pedro Marques-Vidal, Bernard Laurent, Armin von Gunten, and Martin Preisig.
• Memory Clinical and Research Center of Saint Etienne (CMRR) Neurology Unit, University Hospital of Saint Etienne, Saint Etienne, France; INSERM, U1219, Bordeaux Population Health Center, University of Bordeaux, Bordeaux, France. Electronic address: isabelle.rouch@chu-st-etienne.fr.
• J Pain. 2021 Aug 1; 22 (8): 905913905-913.

AbstractChronic pain (CP) and cognitive impairment are common in older adults. CP was found to be associated with cognitive impairment in many cross-sectional studies. However, their cross-sectional design precluded inference on temporality. Accordingly, we aimed to prospectively assess the association between cognitive functioning and the occurrence of CP in older community dwellers. Analyses were based on data of the first (FU1) and the second follow-up (FU2) of CoLaus|PsyCoLaus, a prospective cohort study conducted in the general population of Lausanne (Switzerland) including the participants aged 65 and over. Neuropsychological functioning including memory, language, attention and executive function was measured at FU1. CP was assessed at FU1 and FU2 by self-rating questionnaire. The association between cognitive scores and subsequent CP was determined using multiple logistic regressions. Among the 337 participants without CP at FU1, 107 (31.8%) developed CP at FU2. A significant association was observed between higher Stroop color-time and interference index at FU1 and a higher risk of CP at FU2 (OR = 1.02; P = .03 and OR = 1.49; P = .03, respectively). Our results suggest that patients with inhibitory deficit may be at higher risk of developing CP in the presence of painful events. A cognitive assessment could be recommended to identify frail patients in these situations. PERSPECTIVE: This study suggests that presence of inhibitory deficits is associated with a higher risk of developing subsequent CP in older adults. In the presence of painful events, a cognitive assessment should be recommended to identify frail patients and to manage them carefully.Copyright © 2021 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.

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