Diagnosis

There is no one test to detect Kawasaki disease, so a doctor typically diagnoses it by evaluating the child's symptoms and ruling out other conditions.
Typically, a child who is diagnosed with this illness will have a fever lasting 5 or more days and at least 4 of the following symptoms:

redness in both eyes
changes around the lips, tongue, or mouth
changes in the fingers and toes, such as swelling, discoloration, or peeling
a rash in the trunk or genital area
a large swollen lymph node in the neck
red, swollen palms of hands and soles of feet

If Kawasaki disease is suspected, a doctor may order tests to monitor the child's heart function, which can include an echocardiogram, and other tests of heart function. A doctor may also take blood and urine samples to rule out other conditions, such asscarlet fever, measles,Rocky Moutain Spotted Fever, Stevens-Johnson syndrome,juvenile rheumatoid arthritis, and an allergic drug reaction.