In 1971, less than one-hundred years after Still's publication (1897) concerning children, Bywaters described the adult-onset form of Still disease. Over one-hundred cases of this disorder have been recorded since. In adults, Still disease affects mainly women, and the average age at onset is twenty-seven. The well-known features demonstrated by clinical examination and complementary investigations are recalled. They include fever, arthritis, rash, lymphadenopathy, enlarged spleen, and serositis. Attention is drawn to hepatic and muscular involvement as well as to articular prognosis. Additional information is provided on questions which remain open to debate, particularly concerning management and therapeutic results.