rheumatoid factor-positive polyarticular juvenile idiopathic arthritis
Findings
No curated finding names rheumatoid factor-positive polyarticular juvenile idiopathic arthritis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A category of juvenile idiopathic arthritis defined by the presence of arthritis affecting five or more separate joints during the first six months of disease, with positive serologic testing for rheumatoid factor.
Definition from the Mondo Disease Ontology (MONDO:0019435), read 2026-09-29. CC BY 4.0.
Features
19 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- ArthralgiaHPOHP:0002829
- Very frequent (80% to 99% of cases)
- ArthritisHPOHP:0001369
- Very frequent (80% to 99% of cases)
- Polyarticular arthritisHPOHP:0005764
- Very frequent (80% to 99% of cases)
- Rheumatoid factor positiveHPOHP:0002923
- Very frequent (80% to 99% of cases)
- Abnormal circulating interleukin concentrationHPOHP:0011117
- Frequent (30% to 79% of cases)
- Abnormal epiphysis morphologyHPOHP:0005930
- Frequent (30% to 79% of cases)
- Abnormal limb bone morphologyHPOHP:0002813
- Frequent (30% to 79% of cases)
- Elevated circulating C-reactive protein concentrationHPOHP:0011227
- Frequent (30% to 79% of cases)
- Elevated erythrocyte sedimentation rateHPOHP:0003565
- Frequent (30% to 79% of cases)
- Interphalangeal joint erosionsHPOHP:0006252
- Frequent (30% to 79% of cases)
- Joint swellingHPOHP:0001386
- Frequent (30% to 79% of cases)
- Limitation of joint mobilityHPOHP:0001376
- Frequent (30% to 79% of cases)
Show the remaining 7
- Progressive joint destructionHPOHP:0005187
- Frequent (30% to 79% of cases)
- Symmetric polyarthritisHPOHP:0040311
- Frequent (30% to 79% of cases)
- SynovitisHPOHP:0100769
- Frequent (30% to 79% of cases)
- Asymmetric growthHPOHP:0100555
- Occasional (5% to 29% of cases)
- OsteopeniaHPOHP:0000938
- Occasional (5% to 29% of cases)
- Premature epimetaphyseal fusionHPOHP:0010588
- Occasional (5% to 29% of cases)
Where it sits
Other names
6 names
Resolves to: rheumatoid factor-positive polyarticular juvenile idiopathic arthritis
- Also called
- juvenile idiopathic rheumatoid factor-positive polyarthritispolyarthritis with rheumatoid factorpolyarticular JIA, RF+polyarticular juvenile idiopathic arthritis, RF+polyarticular juvenile idiopathic arthritis, rheumatoid Factor Positiverheumatoid factor-positive polyarticular JIA