Stills disease is a form of juvenile rheumatoid arthritis characterized by high spike fever, intermittent rashes and arthritis. It is known to be common in children and rarely affects adult over 40 years of age. Dr. George Still first described this disease in 1897. This disease can also be associated with inflammation of the internal organs. Juvenile idiopathic arthritis has been said to be a disorder of the autoimmune system in which the body’s own immune system is attacking and destroying tissues in the joint area with unknown reason. Other factor considered for the cause of this disease is genetic predisposition. It is also believed that sex hormones may be the cause since women are more affected with still’s disease than men.

Symptoms of Adult Still's Disease include:
1. Fever
2. Rash
3. Symptoms of joints and muscles
4. Throat problems
5. Lymphadenectasis
6. Hepatosplenomegaly
7. Pleurisy, hydropericardium, myocarditis, and pneumonia