A case of psoriatic arthritis with severe deformities resembling rheumatoid arthritis

Psoriatic arthritis (PsA) is a chronic and inflammatory arthritis that occurs in association with skin psoriasis. The prevalence of psoriasis in the general population is about 1–3%,1 2 and about 6–42% of patients with psoriasis develop PsA. Inflammatory joint disease with psoriatic skin and nail changes with a negative serological test for rheumatoid factor suggests the diagnosis of psoriatic arhritis. We present a case of fifty-five year old male who had severe, deforming arthritis mimicking rheumatoid arthritis who later on developed chronic plaque psoriasis.