How long does it take for the fever to subside with intravenous immunoglobulin in Kawasaki disease?

Patient's question:

My daughter suddenly had a fever without any other symptoms, and it has been a low-grade fever above 39°C. She was given anti-inflammatory medication, but the fever didn't go down. It has been burning for three or four days. Today, the doctor finally diagnosed her with Kawasaki disease and prescribed her to receive intravenous immunoglobulin (IVIG). How long does it take for the fever to subside with IVIG for Kawasaki disease? With this persistent low-grade fever, could it cause brain damage?

Doctor's answer:

Kawasaki disease symptoms such as fever will be relieved in most babies after the administration of intravenous immunoglobulin. If there is no incidence of encephalitis or meningitis, fever will never cause interference to the brain. It is necessary to pay attention to drinking more water, resting more, taking antipyretic drugs promptly when fever occurs, and employing more physical cooling methods. The treatment of Kawasaki disease primarily involves the use of intravenous immunoglobulin and corticosteroids.

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