期刊
RMD OPEN
卷 9, 期 2, 页码 -出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/rmdopen-2022-002956
关键词
Spondylitis; Ankylosing; Arthritis; Psoriatic; Epidemiology
类别
This study compared the characteristics of patients with axial spondyloarthritis (axSpA) and psoriatic arthritis (PsA), and found differences in demographic and clinical features between the two groups, but a similar disease burden.
BackgroundWithin the spectrum of spondyloarthritides, axial spondyloarthritis (axSpA) and psoriatic arthritis (PsA) present with overlapping features. Axial involvement in PsA (axial PsA) is treated according to recommendations for axSpA, as specific studies in axial PsA are scarce. We compared characteristics of patients with axSpA (particularly of patients with axSpA and concomitant psoriasis (pso)) with those of patients with axial PsA.MethodsPatients with axSpA and PsA in the Swiss Clinical Quality Management (SCQM) registry were included if information on pso and axial involvement was available. Patients with AxSpA were stratified by axSpA with and without pso (axSpA +/- pso) and patients with PsA were stratified to axial PsA or strictly peripheral PsA.ResultsPrevious or current psoriasis was observed in 479/4489 patients with axSpA (10.7%). Of 2631 patients with PsA, 1153 (43.8%) presented with axial involvement (opinion of the treating rheumatologist). Compared with patients with axSpA+pso, patients with axial PsA were older at symptom onset and at inclusion in SCQM, were less frequently HLA-B27 positive, had back pain less frequently and a higher prevalence of dactylitis and peripheral arthritis. A positive family history of pso or PsA was more frequent in axial PsA, while a positive family history of axSpA was more frequent in patients with axSpA+pso. Disease activity, function and mobility were comparable in axSpA+pso versus axial PsA.ConclusionPatients with axial PsA differ from patients with axSpA+pso in important demographic and clinical characteristics, and genetically, but present with a comparable disease burden. Treatment studies specifically dedicated to axial PsA seem warranted.
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