Orphanet: Rheumatoid factor negative polyarticular juvenile idiopathic arthritis
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Rheumatoid factor-negative polyarticular juvenile idiopathic arthritis

Disease definition

A rare form of polyarticular juvenile idiopathic arthritis characterized by childhood-onset chronic arthritis of unknown cause involving five or more joints at disease onset and absence of rheumatoid factor IgM.

ORPHA:85408

Classification level: Disorder
  • Synonym(s):
    • Juvenile polyarthritis without rheumatoid factor
    • Juvenile rheumatoid factor-negative polyarthritis
    • Rheumatoid factor-negative polyarticular JIA
  • Prevalence: 1-9 / 100 000
  • Inheritance: Multigenic/multifactorial 
  • Age of onset: Childhood
  • ICD-10: M08.3
  • OMIM: -
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -

Detailed information

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