• Reg Anesth Pain Med · Oct 2021

    Association between widespread pain and dementia, Alzheimer's disease and stroke: a cohort study from the Framingham Heart Study.

    • Kanran Wang and Hong Liu.
    • Center of Medical Reproduction, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
    • Reg Anesth Pain Med. 2021 Oct 1; 46 (10): 879-885.

    Background And ObjectiveChronic pain may be an early indicator of cognitive decline, but previous studies have not systematically examined the population-level associations between widespread pain and adverse cognitive outcomes and stroke. This study was designed to determine the association between widespread pain, a common subtype of chronic pain, and subsequent dementia, Alzheimer's disease dementia and stroke.MethodsThis retrospective cohort study used data from the US community-based Framingham Heart Study. Pain status was assessed at a single time point between 1990 and 1994. Widespread pain was determined based on the Framingham Heart Study pain homunculus. Dementia follow-up occurred across a median of 10 years (IQR, 6-13 years) for persons who were dementia free at baseline. Proportional hazard models examined associations between widespread pain and incident dementia, Alzheimer's disease dementia and stroke.ResultsA total of 347 (14.1%) subjects fulfilled the criteria for widespread pain, whereas 2117 (85.9%) subjects did not. Of 188 cases of incident all-cause dementia, 128 were Alzheimer's disease dementia. In addition, 139 patients suffered stroke during the follow-up period. After multivariate adjustment including age and sex, widespread pain was associated with 43% increase in all-cause dementia risk (HR: 1.43; 95% CI 1.06 to 1.92), 47% increase in Alzheimer's disease dementia risk (HR: 1.47; 95% CI 1.13 to 2.20) and 29% increase in stroke risk (HR: 1.29; 95% CI 1.08 to 2.54). Comparable results were shown in the subgroup of individuals over 65 years old.ConclusionWidespread pain was associated with an increased incidence of all-cause dementia, Alzheimer's disease dementia and stroke.Trial Registration NumberNCT00005121.© American Society of Regional Anesthesia & Pain Medicine 2021. No commercial re-use. See rights and permissions. Published by BMJ.

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