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We have read with great interest the European League Against Rheumatism (EULAR) initiative on comorbidities in chronic inflammatory rheumatic diseases (CIRDs) that was recently published online in ARD.1 This initiative focuses primarily on the most prevalent and important comorbidities in patients with CIRDs, mainly rheumatoid arthritis (RA), spondyloarthritis, connective tissue disorders and crystal arthropathies but the authors indicate that they may be also applied to cases of severe osteoarthritis.1
Comorbidity has high impact in the prognosis and health outcome. It is applicable to patients with CIRDs. In this regard, the existence of several comorbidities increases the patient's disability in CIRDs. For example, in RA, the disability measured by the Health Assessment Questionnaire (HAQ), increases depending on …