• Journal of anesthesia · Apr 2024

    Association between smoking and central sensitization pain: a web-based cross-sectional study.

    • Satoko Chiba, Keiko Yamada, Aiko Kawai, Saeko Hamaoka, Hiroko Ikemiya, Atsuko Hara, Kenta Wakaizumi, Takahiro Tabuchi, Keisuke Yamaguchi, Izumi Kawagoe, and Masako Iseki.
    • Department of Anesthesiology and Pain Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan. sa-chiba@juntendo.ac.jp.
    • J Anesth. 2024 Apr 1; 38 (2): 198205198-205.

    PurposeThis study aimed to investigate whether smoking is an independent risk factor for central sensitization syndrome (CSS) in individuals with pain as measured by the Central Sensitization Inventory (CSI).MethodsIn 2020, we conducted an Internet survey targeting 2000 ordinary residents of Japan (aged 20-69 years) who had pain symptoms from October to November 2020. A multiple regression analysis was performed on the association between smoking status (nonsmokers and current smokers; Brinkman index) and CSI values. Moreover, compared to nonsmokers, the relative risk (RR) of the CSI cut-off score of 40 points or higher among current smokers was calculated using a modified Poisson regression model. Covariates included age, sex, body mass index, marital status, equivalized income, exercise habits, history of hypertension, history of hyperlipidemia, history of diabetes, pain chronicity, and Pain Catastrophizing Scale score.ResultsThis study analyzed 1,822 individuals (1,041 men and 781 women). Among those experiencing pain, current smoking was associated with the increase in CSI values (β = 0.07). The Brinkman index was also significantly associated with the increase in CSI values (β = 0.06). Current smoking also increased the risk of being over the CSI cut-off score, with a relative risk (RR) of 1.29 (95% confidence intervals, 1.04-1.60). Younger age, being women, experiencing chronic pain, and higher pain catastrophizing thinking were also significantly associated with increased CSS severity, independent of smoking status.ConclusionSmoking is an independent risk factor for CSS. This indicates that smoking may be an important factor in the management of central pain disorders.© 2024. The Author(s).

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