●Yamaguchi criteria – The Yamaguchi criteria require the presence of five features, with at least two being major diagnostic criteria . In addition, the presence of any infection, malignancy, or other rheumatic disorder known to mimic ASD in its clinical features precludes the diagnosis of ASD, at least for the purpose of research.
The four major Yamaguchi criteria are:
•Fever of at least 39ºC (102.2ºF) lasting at least one week
•Arthralgias or arthritis lasting two weeks or longer
•A nonpruritic macular or maculopapular skin rash that is salmon-colored in appearance and usually found over the trunk or extremities during febrile episodes
•Leukocytosis (10,000/microL or greater), with at least 80 percent granulocytes
The minor Yamaguchi criteria include:
•Sore throat
•Lymphadenopathy
•Hepatomegaly or splenomegaly
•Abnormal liver function studies, particularly elevations in aspartate and alanine aminotransferase and lactate dehydrogenase concentrations
•Negative tests for antinuclear antibody (ANA) and rheumatoid factor (RF)
Bhopalwala. H
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