Table 3: Yamaguchi Criteria for AOSD Diagnosis.
For the diagnosis of adult-onset Still disease, ≥ 5 criteria must be met, including ≥ 2 major [8].

Major & Minor Criteria

Criteria satisfied by patient

Major Criteria

Fever of 102 F < for at least 1 week

Yes

Arthralgias/arthritis for 2 weeks <

Yes

Non pruritic macular or maculopapular rash (salmon colored over trunk and extremities, associated with the fevers)

Yes

Leukocytosis

Yes

Minor Criteria

Sore throat

Yes

Lymphadenopathy

Yes

Hepatomegaly/Splenomegaly

Yes

Abnormal LFTs (AST, ALT, LDH)

-

Negative ANA and RF

Yes