Noun rheumatism has 2 senses
  1. rheumatism - any painful disorder of the joints or muscles or connective tissues
    --1 is a kind of
    disease
  2. rheumatoid arthritis, atrophic arthritis, rheumatism - a chronic autoimmune disease with inflammation of the joints and marked deformities; something (possibly a virus) triggers an attack on the synovium by the immune system, which releases cytokines that stimulate an inflammatory reaction that can lead to the destruction of all components of the joint
    --2 is a kind of arthritis; autoimmune disease, autoimmune disorder
    --2 has particulars: psoriatic arthritis; Still's disease, juvenile rheumatoid arthritis
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