Table 3

 Evidence considered in the differential diagnosis

Factors for this diagnosisFactors against this diagnosis
Incomplete Kawasaki disease• Prolonged pyrexia• No cervical lymphadenopathy
• Rash• No conjunctivitis
• Peeling• No mouth involvement
• Irritability• Peeling usually later
• Thrombocytosis
• Raised inflammatory markers
Systemic onset juvenile idiopathic arthritis• Pyrexia• No joint involvement detected
• Irritability• No splenomegaly
• Rash
• Raised ferritin
• Thrombocytosis
• Raised inflammatory markers