|
PRESENCE OF RHEUMATOID FACTOR |
|
rheumatic diseases: |
rheumatoid arthritis systemic lupus erythematosus scleroderma mixed connective tissue disease (overlap syndrome) Sjögren's syndrome |
|
acute viral infections: |
EBV hepatitis influenza vaccinations |
|
parasitic infections: |
malaria trypanosomiasis kala-azar filariasis schistosomiasis |
|
chronic inflammatory diseases: |
tuberculosis leprosy yaws syphilis subacute bacterial endocarditis salmonellosis |
|
other hyperglobulinaemic states: |
hypergammaglobulinaemic purpura cryoglobulinaemia sarcoidosis chronic liver disease chronic pulmonary disease, eg. bronchiectasis |
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