Adult-onset Still’s disease is a rare type of arthritis that starts in adulthood. It can cause:

• Fever;
• Rash;
• Joint pain.

Adult-onset Still’s disease is the adult form of a subtype of arthritis in kids called systemic juvenile idiopathic arthritis (SJIA).

Adult-onset Still’s disease typically affects adults under age 35. Fewer than 1 in 100,000 people get it each year. There is no cure, but you can control your symptoms with treatment.