rheumatoid factor-negative juvenile idiopathic arthritis
Findings
No curated finding names rheumatoid factor-negative juvenile idiopathic arthritis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Rheumatoid factor-negative polyarthritis is a term used to describe a group of poorly defined heterogenous conditions that incorporates forms of rheumatoid factor-negative polyarthritis and forms of oligoarticular arthritis that become extensive in less than 6 months after onset.
Definition from the Mondo Disease Ontology (MONDO:0019432), read 2026-09-29. CC BY 4.0.
Features
31 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.
- Abnormality of the wristHPOHP:0003019
- Frequent (30% to 79% of cases)
- Ankle swellingHPOHP:0001785
- Frequent (30% to 79% of cases)
- ArthralgiaHPOHP:0002829
- Frequent (30% to 79% of cases)
- ArthritisHPOHP:0001369
- Frequent (30% to 79% of cases)
- Elevated erythrocyte sedimentation rateHPOHP:0003565
- Frequent (30% to 79% of cases)
- EnthesitisHPOHP:0100686
- Frequent (30% to 79% of cases)
- Joint stiffnessHPO
Show the remaining 19
- Abnormal metacarpophalangeal joint morphologyHPOHP:0011911
- Occasional (5% to 29% of cases)
- Abnormal metatarsal morphologyHPOHP:0001832
- Occasional (5% to 29% of cases)
- Abnormal shoulder morphologyHPOHP:0003043
- Occasional (5% to 29% of cases)
- Abnormality of the cervical spineHPOHP:0003319
- Occasional (5% to 29% of cases)
- Abnormality of the handHPOHP:0001155
- Occasional (5% to 29% of cases)
- Abnormality of the temporomandibular jointHPOHP:0010754
Where it sits
Other names
3 names
Resolves to: rheumatoid factor-negative juvenile idiopathic arthritis
- Also called
- juvenile rheumatoid factor-negative polyarthritispolyarthritis without rheumatoid factorrheumatoid factor-negative JIA