부산대학교 도서관

We present a case of psoriatic arthritis preceding the appearance of skin manifestation. A 48-yearold man presented to our hospital with pain in the finger, toe, and ankle joints. The erythematous and swollen joints were 3 joints, and the distribution of them is asymmetrical. The antibodies referring rheumatoid arthritis (RA) were negative. Two years had gone from the onset of joints pain until the appearance of the skin lesions, helping of diagnosis of the psoriatic arthritis. Although the diagnosis of psoriatic arthritis is easily made when the skin lesions of psoriasis are present, it is difficult to diagnose when the arthritis precedes the appearance of the skin lesions. It is important to follow up asymmetrical oligoarthritis with negative RF even in the absence of typical skin lesions as the possible diagnosis of psoriatic arthritis.