Abstract
Juvenile spondyloarthritis (J-spa) is characterized by a predominantly peripheral involvement and more frequent presentation as undifferentiated forms. However, like its adult-onset equivalent, it has the potential to develop structural damage and evolve to juvenile ankylosing spondylitis (J-AS), with consequent functional impairment that will last for the lifetime of the patient. Although descriptions of jspa in worldwide different populations are scarce, it has been suggested that clinical expression could be different in Spanish and Mexican patients.
Highlights
Juvenile spondyloarthritis (J-spa) is characterized by a predominantly peripheral involvement and more frequent presentation as undifferentiated forms
Mean age of onset was higher in Mexican group (12 ± 3 years) than Spanish group (10 ± 4 years), 1Rheumatology, University Hospital Ramon y Cajal, Madrid, Spain Full list of author information is available at the end of the article with a longer disease duration ofthe latter group. 94% of Spanish patients were Caucasian, while in Mexico predominated white-Indian (64%)
More patients in the Mexican cohort were diagnosed with juvenile ankylosing spondylitis (J-AS) in Mexico (61%) than in the Spanish (7%), but undifferentiated J-spa and psoriatic arthritis were more frequent in the Spanish patients (46% and 36%, respectively) than in Mexican patients (36% and 3%, respectively)
Summary
Juvenile spondyloarthritis (J-spa) is characterized by a predominantly peripheral involvement and more frequent presentation as undifferentiated forms. PReS-FINAL-2115: Differences in musculoskeletal clinical expression between Spanish and Mexican patients with juvenile spondyloarthritis: data from the Mexespa project Descriptions of jspa in worldwide different populations are scarce, it has been suggested that clinical expression could be different in Spanish and Mexican patients. Objectives Compare the patterns of musculoskeletal involvement in J-spa patients from Spain and Mexico.
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