Adult Still's disease is characterized by typical spiking fever, oligopolyarthritis, neutrophilic leukocytosis and involvement of various organs. We report a case which illustrated typical digestive features of Still's disease as dysphagia, peritonitis and manifests the hitherto unreported complication of gastric ulcerations. Treatment with prednisone was started in order to control arthritis, resulting in improvement of both gastric ulcerations (partially resistant to omeprazole treatment) and arthralgia. After seven years of follow-up, the patient remains clinically and biochemically stable with steroid and methotrexate treatment.