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Associated disorders

Authoring team

Associated disorders include:

  • polyarthritis - about 10% of cases have rheumatoid arthritis; rheumatoid factor is positive in about 35% of cases.
  • autoimmune chronic hepatitis occurs in about 5 to 10% of cases
  • thyroid disease
  • systemic lupus erythematosus
  • systemic sclerosis
  • dermatomyositis.

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