
Rheumatoid arthritis and other inflammatory polyarthropathies

Rheumatoid arthritis
- chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures; etiology is unknown, but autoimmune mechanisms have been implicated.
- A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated.

Felty's syndrome

Other rheumatoid arthritis with visceral or systemic involvement

Juvenile chronic polyarthritis

Chronic or unspecified polyarticular juvenile rheumatoid arthritis
- rheumatoid arthritis of children occurring in three major subtypes defined by the symptoms present during the first six months following onset: systemic onset (Still's Disease, Juvenile Onset), polyarticular onset, and pauciarticular onset; adult onset cases of Still's disease (Still's Disease, adult onset) are also known; only one subtype of juvenile rheumatoid arthritis (polyarticular onset, rheumatoid factor positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.

Acute polyarticular juvenile rheumatoid arthritis

Pauciarticular juvenile rheumatoid arthritis

Monoarticular juvenile rheumatoid arthritis

Chronic postrheumatic arthropathy

Other specified inflammatory polyarthropathies

Rheumatoid lung

Other specified inflammatory polyarthropathies

Unspecified inflammatory polyarthropathy