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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Persistent Mild Fever At Night?

I have been having fever at night only low-grade fever mostly but around 10 or 11 am I am fine. Then it happens again. I had lab work and nothing. I called my dr and was not responsive. Could I have some virus or bacteria that will eventually go away ?
Wed, 2 Aug 2023
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Cardiologist,  's  Response
Hi,

Actually, no, you may not have a virus or bacteria. Yet, nothing was wrong in your lab examination. Commonly, a low-grade fever (up to 37.5 degrees Celsius) are induced by viral infections, but they do not last for a long time and they would appear on your lab work. I think that the bacterial infection is crossed off, because bacteria cause temperature higher than 37.5 degrees Celsius.

These wandering figures of your temperature are usually as a result of hormonal changes throughout the day, which are physiological (normal) changes, and I do not think you have anything to be worried about or to follow-up with other tests or exams.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Meriton Siqeca, Cardiologist
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What Causes Persistent Mild Fever At Night?

Hi, Actually, no, you may not have a virus or bacteria. Yet, nothing was wrong in your lab examination. Commonly, a low-grade fever (up to 37.5 degrees Celsius) are induced by viral infections, but they do not last for a long time and they would appear on your lab work. I think that the bacterial infection is crossed off, because bacteria cause temperature higher than 37.5 degrees Celsius. These wandering figures of your temperature are usually as a result of hormonal changes throughout the day, which are physiological (normal) changes, and I do not think you have anything to be worried about or to follow-up with other tests or exams. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Meriton Siqeca, Cardiologist