Adult Still disease: MedlinePlus Medical Encyclopedia

Adult Still disease: MedlinePlus Medical Encyclopedia

Adult Still disease

    

Adult Still disease (ASD) is a rare illness that causes high fevers, rash, and joint pain. It may lead to long-term (chronic) arthritis.

Adult Still disease is a severe version of juvenile idiopathic arthritis (JIA), which occurs in children. Adults can have the same condition, although it is much less common. It is also called adult-onset Still disease (AOSD).

Causes

Fewer than 1 out of 100,000 people develop ASD each year. It affects women more often than men.

The cause of adult Still disease is unknown. No risk factors for the disease have been identified.