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. 1997 Sep;24(9):1744-9.

Presence of psoriasis does not influence the presentation or short-term outcome of patients with early inflammatory polyarthritis

B J Harrison  1 , A J Silman, E M Barrett, D G Scott, D P Symmons
Affiliations
  • PMID: 9292798

Presence of psoriasis does not influence the presentation or short-term outcome of patients with early inflammatory polyarthritis

B J Harrison et al. J Rheumatol. 1997 Sep.

Abstract

Objective: To determine whether the presence of psoriasis influences the presentation and early outcome of disease in a primary case based inception cohort of patients with early inflammatory polyarthritis.

Methods: In total, 966 patients with early inflammatory polyarthritis referred to the Norfolk Arthritis Register were studied. The clinical and demographic variables of patients with and without psoriasis were compared.

Results: Fifty-one patients (5.3%) had psoriasis on examination. Compared to other patients with inflammatory polyarthritis, those with psoriasis were significantly more likely to be male (49 vs 34%) and less likely to be seropositive for rheumatoid factor (RF) (13 vs 31%). The pattern of joint involvement was similar, as was the outcome at one year. Fewer patients with psoriasis developed radiological erosions (22 vs 39%). Multivariate analysis suggested that this was due to RF acting as a confounder.

Conclusion: Among patients with early inflammatory polyarthritis there are few strong differences between patients with and without psoriasis, some of which may be accounted for by the absence of RF.

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