Pauciarticular Polyarticular Systemic Seroneg A.
Age 1-3 yr. 1-3,Adolescent Any > 8 yr.
Sex 4:1 female 3:1 female Equal 4:1 male
Joint (n) < 5 > 4 Any Any
Joints (size) Large Large & Small Any Lower Extrem.
Enthesitis - - - - - - Pos
Iritis
Chronic 20 % 10 % 5 % - -
Acute - - - - - - Pos
ESR Norm to Low Norm to mod. Mod-High Norm-mod
ANA + 30-50 % 30 % 15 % - -
RF + < 5 % 15-50 % 5 % Pos
Signs F/Nodules F/Rash
Destructive Uncommon 10-15% RF- 25-50% Uncommon
Arthritis 25-50% RF+
Chronic Inflammatory Arthritis in Childhood
- See synovial fluid Exam: