Kawasaki Disease Diagnostic Criteria (classic + incomplete)
Kawasaki disease criteria (AHA 2017): fever ≥ 5 days + ≥ 4 of 5 principal features = classic KD; the incomplete-KD pathway uses CRP/ESR and supplementary labs when 2-3 features are present.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Fever duration
- 6 days
- Bilateral non-exudative conjunctivitis
- Yes
- Oral mucosal changes
- Yes
- Cervical lymphadenopathy >= 1.5 cm
- Yes
- Extremity changes
- Yes
Result: Fever 6 days + 4/5 principal features: meets classic Kawasaki disease criteria.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Classic
- fever >= 5 days plus >= 4 of 5 principal features (conjunctivitis, oral changes, cervical node >= 1.5 cm, extremity changes, polymorphous rash).
- Incomplete
- prolonged fever + 2-3 features -> CRP >= 3.0 mg/dL and/or ESR >= 40 -> >= 3 of 6 supplementary lab criteria or a positive echo supports the diagnosis.
What you enter
- Fever duration
- Bilateral non-exudative conjunctivitis
- Oral mucosal changes (lips/oropharynx)
- Cervical lymphadenopathy >= 1.5 cm
- Extremity changes (erythema/edema/desquamation)
- Polymorphous rash
- CRP
- ESR
The other 7 fields
- Anemia for age
- Platelets >= 450,000 after day 7
- Albumin <= 3.0 g/dL
- Elevated ALT
- WBC >= 15,000/uL
- Urine WBC >= 10/hpf
- Echocardiogram positive for coronary involvement
How this is calculated
McCrindle BW, Rowley AH, Newburger JW, et al. Diagnosis, Treatment, and Long-Term Management of Kawasaki Disease: A Scientific Statement From the American Heart Association. Circulation. 2017;135(17):e927-e999. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.