BACKGROUND AND AIMS: Neuropathic pain has been shown to be accompanied by cognitive impairment, but the specific impact of postherpetic neuropathic pain on cognitive processes has not been explored. This study aims to evaluate the impact of pain on several domains of cognition in older patients with postherpetic neuralgia (PHN). METHODS: This cross-sectional study (clinicaltrial.gov NCT 00989040) included 84 individuals after signature of informed consent. PARTICIPANTS: 42 patients with PHN and 42 healthy volunteers. Of the 42 PHN patients, 21 received systemic treatment (antidepressants, anticonvulsants, opiates) and 21 had topical treatment with the 5% lidocaine medicated plaster. All participants performed a panel of four cognitive tests: reaction time, semantic memory, decision-making, and visual memory (Cantab, Cambridge). RESULTS: Forty men and 44 women with a mean age of 72 ± 8 years participated. Each PHN patient was matched by age and gender with a healthy volunteer. Vigilance, decision-making, and semantic memory were significantly impaired (P < 0.05) in patients on systemic treatment, especially with antidepressants, while no significant changes were noted between the lidocaine plaster group and their matched controls of healthy volunteers. CONCLUSION: This study shows the deleterious effect of systemic PHN treatment on several domains of cognition. Cognitive impairment associated with pain and antidepressants may be reversed by topical pain management. Topical treatment with 5% lidocaine medicated plaster is a valuable alternative for pain alleviation and maintains cognitive integrity in this vulnerable population.
BACKGROUND AND AIMS: Neuropathic pain has been shown to be accompanied by cognitive impairment, but the specific impact of postherpetic neuropathic pain on cognitive processes has not been explored. This study aims to evaluate the impact of pain on several domains of cognition in older patients with postherpetic neuralgia (PHN). METHODS: This cross-sectional study (clinicaltrial.gov NCT 00989040) included 84 individuals after signature of informed consent. PARTICIPANTS: 42 patients with PHN and 42 healthy volunteers. Of the 42 PHN patients, 21 received systemic treatment (antidepressants, anticonvulsants, opiates) and 21 had topical treatment with the 5% lidocaine medicated plaster. All participants performed a panel of four cognitive tests: reaction time, semantic memory, decision-making, and visual memory (Cantab, Cambridge). RESULTS: Forty men and 44 women with a mean age of 72 ± 8 years participated. Each PHN patient was matched by age and gender with a healthy volunteer. Vigilance, decision-making, and semantic memory were significantly impaired (P < 0.05) in patients on systemic treatment, especially with antidepressants, while no significant changes were noted between the lidocaine plaster group and their matched controls of healthy volunteers. CONCLUSION: This study shows the deleterious effect of systemic PHN treatment on several domains of cognition. Cognitive impairment associated with pain and antidepressants may be reversed by topical pain management. Topical treatment with 5% lidocaine medicated plaster is a valuable alternative for pain alleviation and maintains cognitive integrity in this vulnerable population.
Authors: Robert W Johnson; Marie-José Alvarez-Pasquin; Marc Bijl; Elisabetta Franco; Jacques Gaillat; João G Clara; Marc Labetoulle; Jean-Pierre Michel; Luigi Naldi; Luis S Sanmarti; Thomas Weinke Journal: Ther Adv Vaccines Date: 2015-07
Authors: Gianluca Castelnuovo; Emanuele M Giusti; Gian Mauro Manzoni; Donatella Saviola; Arianna Gatti; Samantha Gabrielli; Marco Lacerenza; Giada Pietrabissa; Roberto Cattivelli; Chiara A M Spatola; Stefania Corti; Margherita Novelli; Valentina Villa; Andrea Cottini; Carlo Lai; Francesco Pagnini; Lorys Castelli; Mario Tavola; Riccardo Torta; Marco Arreghini; Loredana Zanini; Amelia Brunani; Paolo Capodaglio; Guido E D'Aniello; Federica Scarpina; Andrea Brioschi; Lorenzo Priano; Alessandro Mauro; Giuseppe Riva; Claudia Repetto; Camillo Regalia; Enrico Molinari; Paolo Notaro; Stefano Paolucci; Giorgio Sandrini; Susan G Simpson; Brenda Wiederhold; Stefano Tamburin Journal: Front Psychol Date: 2016-04-19