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Evidence from clinic-based studies suggests that the fibromyalgia syndrome (FMS) is associated with impairment in cognitive function though the mechanism is unclear. The aim of this analysis was to determine whether there is a similar association between chronic widespread pain (CWP), a cardinal feature of FMS, and impaired cognition in a community setting. Men (n=3369, 40-79 years) were recruited from population registers in eight centres for participation in the European Male Ageing Study (EMAS). The subjects completed a pain questionnaire and pain manikin, with the presence of CWP defined using the American College of Rheumatology criteria. The cognitive functions measured were visuospatial-constructional ability and visual memory (Rey-Osterrieth Complex Figure [ROCF]); visual recognition (Camden Topographical Recognition Memory test [CTRM]); and psychomotor processing speed (Digit-Symbol Substitution test [DSST]). We restricted our analysis to those subjects reporting pain that satisfied the criteria for CWP and those who were pain free. Of these 1539 men [mean (SD) age 60 (11) years], 266 had CWP. All cognitive test scores declined cross-sectionally with age (P<0.05). In age-adjusted linear regressions men with CWP had a lower DSST score (β=-2.4, P<0.001) compared to pain-free subjects. After adjustment for lifestyle and health factors the association between pain status and the DSST score was attenuated but remained significant (β=-1.02, P=0.04). There was no association between CWP and the ROCF-copy, ROCF-recall or CTRM scores. CWP is associated with slower psychomotor processing speed among community-dwelling European men. Prospective studies are required to confirm this observation and explore possible mechanisms for the association.

Type

Journal article

Journal

Pain

Publication Date

10/2010

Volume

151

Pages

30 - 36

Addresses

Arthritis Research UK Epidemiology Unit, The University of Manchester, Manchester, UK. david.m.lee@manchester.ac.uk

Keywords

EMAS Study Group, Humans, Pain, Chronic Disease, Questionnaires, Statistics, Nonparametric, Cohort Studies, Photic Stimulation, Life Style, Learning, Visual Perception, Psychomotor Performance, Reaction Time, Cognition Disorders, Neuropsychological Tests, Residence Characteristics, Aging, Reference Values, Adult, Aged, Middle Aged, European Continental Ancestry Group, Europe, Male