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Many apparently distinctive clinical syndromes of pain and dysfunction show considerable overlap in both population and clinical settings. If the explanation is that they all share a common underlying mechanism, then we hypothesize that any one syndrome will be unlikely to retain its distinctiveness over time. Consultation data from general practice records for 10,073 women, collected between 1968 and 1978, was linked with information on pain complaints obtained from a subsequent postal survey carried out in 1994. Illness episodes were identified from the general practice records and grouped into diagnostic subcategories. Associations between these and future pain complaints were explored, adjusting for age, smoking, body mass index and social class in a series of nested case–control analyses. Overall, the strongest independent associations of current pain were with episodes of musculoskeletal illness …