Different Psoriatic Arthritis
According to different definitions, about 10 to 30% of psoriasis patients have psoriatic arthritis. Traditionally, the rheumatoid factor was negative, while there are skin symptoms of psoriasis and psoriatic arthritis patients of arthritis is called, now put the psoriatic arthritis is defined as a spinal joint disease, most of these patients are HLA-B27 positive patients. [...]