An analysis of 160 patients with Reiter's disease, 144 with yersinia arthritis, and 9 with salmonella arthritis was performed. Complete or incomplete Reiter's syndrome was observed in one‐third of the patients with yersinia arthritis and in most of those with salmonella arthritis. During the followup period, chronic back pain and joint symptoms were frequent in all the patient groups. Patients who were HLA—B27 positive had a more severe acute disease (more frequent back pain, urologic symptoms, mucocutaneous manifestations, and a longer duration of the disease) and more frequent chronic back pain and sacroiliitis.
A study of 74 yersinia arthritis patients implied that the clinical picture of the disease may be modified by genetic background associated with the histocompatibility antigen B27 (HLA‐B27). Sixty‐six percent of patients were B27 positive. Joint symptoms were somewhat more severe in B27+ patients. Iritis, conjunctivitis, carditis, signs of urologic inflammation, and complete Reiter's triad occurred only in the B27+ group, whereas erythema nodosum was more common in B27— group. Several B27+ patients also had “B27+ rheumatic diseases,” such as ankylosing spondylitis or Reiter's disease, in their history.
The acute clinical picture and long-term prognosis of 160 patients with Reiter's disease (RD), and 144 patients with reactive arthritis triggered by yersinia infection (YA), was analysed. Most of the patients with RD were men, while YA was as common among male and female patients. YA manifested in a third of patients as incomplete or complete RD. The long-term prognosis in RD was less favourable than in YA. Recurrent arthritis, development of chronic destructive arthritis and radiologic sacroiliitis were more frequent in RD than in YA. The presence of HLA-B27 was the major factor determining extra-articular inflammatory symptoms and the development of chronic problems.
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