Major criteria

Fever ≥ 39˚C for ≥1 week

Arthralgias or arthritis ≥ 2 weeks

Maculopapular nonpruritic skin lesion

Leukocytosis (≥10,000/mL), with N ≥ 80%

Minor criteria

Sore throat

Lymphadenopathy

Hepatomegaly or splenomegaly

Elevated AST, ALT, or LDH

Negative ANA and RF