Juvenile RA

1. What is the most common connective tissue disease in children?
2. What eye condition is associated with pauciarticular type I JRA? What percentage of patients develop this?
3. Which JRA subtype has the most severe arthritis?
4. What JRA subtype is associated with pauciarticular type II?

Answers:
1. Juvenile rheumatoid arthritis?
2. Iridocyclitis in 50%.
3. Polyarticular rheumatoid factor positive: severe arthritis in >50%.
4. HLA-B27.