What is the reason for low fever during the recovery period of Kawasaki disease?

Patient's question:

Since May 25th, I have had a fever that has persisted until May 31st. From May 25th to May 31st, I received intravenous fluids and medication for upper respiratory infection. Later, after blood tests and other physical examinations, I was diagnosed with Kawasaki disease on May 31st. However, my blood count is still low. What could be the reason for this?

Doctor's answer:

Because Kawasaki disease recurrence is very troublesome, its recurrence rate is actually not very high. It is around 2%. Therefore, parents must take good care of their children. It is best to avoid causing a fever during the recovery period. This is not conducive to the recovery of Kawasaki disease and may also affect the child's physical health. Many diseases can cause low-grade fever. Fever is a symptom. Rheumatism, tuberculosis, chronic inflammation, and low immunity can all cause persistent low-grade fever; long-term psychological stress and emotional instability can also cause dysfunction of the body's temperature regulation center, leading to persistent low-grade fever. The key is to identify the cause. Do not overuse medication for unexplained low-grade fever.

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