family history or presence of enthesopathic pain , psoriasis , inflammatory bowel disease , uveitis , recurrent urethritis , prostatitis or cervicitis , keratoderma blennorrhagicum , hla-b27 , and asymmetric pauciarticular lower lower extremity arthritis without rheumatoid factor or rheumatoid nodules suggests a diagnosis of sp rather than ra .
C0035450
rheumatoid nodules
C0003873
ra