What is the reason for fever at night and no fever during the day?

Patient's question:

These days, my boss said my spirits aren't good, affecting my work performance. Actually, I don't want to, either. I always can't sleep at night, sometimes feeling anxious and uncomfortable. If it gets serious, I'm worried it will affect my health and work. Please, why do I have a fever at night but not during the day?

Doctor's answer:

A child having a fever is a common occurrence, usually caused by a cold. Since a child's thermoregulatory center is not yet fully developed, it is easily affected by external factors, leading to fluctuations in body temperature. Generally, it is recommended not to exceed 38 degrees Celsius, as medication is not necessary. Physical cooling methods should be prioritized, such as applying alcohol to the body and washing the face and forehead with warm water. If the temperature exceeds 38 degrees Celsius, ibuprofen suspension or naproxen can usually be taken.

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