Objective:To improve the recognition of extra articular manifestations in rheumatoid arthritis(RA) and reduce the misdiagnosis or error in treatment.
目的：提高对类风湿关节炎（RA）患者关节外表现的认识，减少误诊、误治。
Complications may occur from spinal and articular disease or extra-articular manifestations.
并发症可能发生在脊柱和关节或者关节外表现。
The main extra-articular manifestations of AS were enthesitis, iritis or iridocyclitis, urinary tract symptoms and chronic diarrhoea, which might offer clues for the diagnosis.
AS的关节外表现主要有肌腿端炎、虹膜炎或虹睫炎、泌尿系症状和慢性腹泻史，这些症状可作为AS的诊断线索。
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