Wolfe F, et al. - Researchers examined if and how physical (non-psychological) comorbidity and multimorbidity are associated with quantitative measures of fibromyalgia (FM) and musculoskeletal pain. From a research databank, they analyzed data from 12,215 patients with quantitative measures of FM-related variables (FMV) that included binary determinations of FM and widespread pain (WSP), and constituent variables of FM diagnosis that included the WSP index, the symptom severity score, and the polysymptomatic distress scale. Outcomes revealed an association of FM and FMV with an increase in the number of comorbidities; quantitative measurement of the association can be done. However, the definitions of WSP and FM seemed affecting the association of WSP and FM, as comorbidity increases are also present with subsyndromal levels of both conditions.