An increased volume of scientific evidence is requisite concerning the attributes of ERA, which is presently regarded predominantly within the framework of juvenile spondyloarthritis, distinguishing it from its adult counterpart; this study serves as an observational cohort investigation that underscores this imperative. Despite the observable differences and similarities between ERA and AS, further extensive studies incorporating inflammatory biomarkers are essential to ascertain whether these conditions represent discrete diseases or exist within a broader disease continuum. Cite this article as: Unan MK, Özaslan Z, Dilek G, Şahin N, Sönmez HE, Nas K. Juvenile vs. adult-onset spondyloarthritis: Uncovering similarities and differences. Arch Rheumatol. 2026;41(2):90-99.
Unan et al. (Fri,) studied this question.