Table 3. Yamaguchi criteria.

WBC: white blood cells; ANA: anti-nuclear antibody

Reference: [1]

Major criteria	Minor criteria	Exclusion criteria
1. Fever more than equal to 39°C lasting for at least one week	1. Sore throat	Infections, malignancy, other autoinflammatory disorders (mainly polyarteritis nodosa and rheumatoid vasculitis with extra-articular features)
	2. Enlargement of the lymph nodes
2. Neutrophil predominant leukocytosis with WBC >10,000/mm3; polymorphs >80%
	3. Organomegaly-splenomegaly or hepatomegaly
	4. Deranged liver function tests
3. Arthralgia or arthritis lasting for more than two weeks
	5. Negative ANA and rheumatoid factor tests
4. Typical non-pruritic salmon pink skin rash