the study of 36 published cases of adult still 's disease shows the following features : the onset takes place usually during the third decade of life , most often as a polyarthralgia characterized by sometimes starting fever , evanescent rash , neutrophil leukocytosis , negativity of the serological tests for rheumatoid arthritis and systemic lupus ;
C0085253
adult still 's disease
C0003873
rheumatoid arthritis