Can Kawasaki disease be detected through a blood test?

Patient's question:

Recently, I don't know why I've been feeling uncomfortable with my heart. Although I often take medication to control it, the effect is not obvious. When I went to the hospital for a check-up, they also prescribed medication. Can Kawasaki disease be detected through a blood test?

Doctor's answer:

Kawasaki disease is a vasculitis syndrome, also known as mucocutaneous lymph node syndrome. Its greatest danger is the recurrence of coronary artery expansion. The main clinical manifestations of this disease are fever, with temperatures ranging from 39 to 40 degrees Celsius, and the duration may last for one to two weeks, or even longer. Antibiotic treatment is ineffective. As the condition progresses, conjunctival bleeding may occur, along with severe swelling, hardness, and peeling of the oral and labial mucosa. Swelling of the cervical lymph nodes may also appear. This disease cannot be detected through a complete blood count, but the blood test may show certain indicators: the total white blood cell count is generally normal or slightly decreased, the percentage of neutrophils is elevated, and platelets begin to show significant changes starting from the third week of the course.

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