[A case of psoriatic arthropathy complicated with clinical feature of ankylosing spondylitis]

A 25 years old man with psoriatic arthropathy complicated with clinical feature of ankylosing spondylitis was reported. 230 Japanese cases of psoriatic arthropathy were discussed.

1) commoner in male 2) the cases that skin lesions were prior to arthritis and the cases that arthritis was prior to skin lesions were almost the same number 3) rheumatoid factor was seropositive in 17% of the cases 4) HLA-B27 was present in 9 of 50 cases and 7 of these 9 cases had central type arthritis 5) the cases had accompanied nail dystrophies in a high rate 6) concerning on skin lesion, many cases had atypical psoriatic lesion 7) 21.1% of the cases had central type arthritis 8) there were no certain effective therapy 9) prognosis of central type cases were relatively worse.