Systemic-onset rheumatoid arthritis in adults. It differs from classical rheumatoid arthritis in that it is more often marked by acute febrile onset, and generalized lymphadenopathy and hepatosplenomegaly are more prominent.

Synonyms: Stills Disease, Adult-Onset, Still's Disease, Adult Onset, Adult Onset Still Disease, Adult-Onset Still's Disease, Still Disease, Adult Onset, Still's Disease, Adult-Onset, Adult Onset Still's Disease, Still Disease, Adult-Onset, Adult-Onset Stills Disease, Adult-Onset Still Disease