#arthritis__arthriti  inflammation of a joint or joints
  supertype:  #inflammatory_disease  a disease characterized by inflammation
  subtype:  #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
     subtype:  #psoriatic_arthritis  a form of rheumatoid arthritis usually affecting fingers and toes and associated with psoriasis
     subtype:  #Still's_disease__juvenile_rheumatoid_arthritis  a form of rheumatoid arthritis that affects children; large joints become inflamed and bone growth may be retarded
  subtype:  #osteoarthritis__degenerative_arthritis__degenerative_joint_disease  chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age
  subtype:  #gout__gouty_arthritis__goutyarthriti__urarthritis__urarthriti  a painful inflammation of the big toe and foot caused by defects in uric acid metabolism resulting in deposits of the acid and its salts in the blood and joints
  subtype:  #spondylarthritis  arthritis that affects one or more of the intervertebral joints in the spine

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