Nhớ lại xem có người nào xung quanh bạn gần đây bị bệnh không. Ghi chép về thân nhiệt. Ghi chép lại những triệu chứng khác. Tìm tư vấn y tế. Tuân theo hướng dẫn của bác sĩ trong điều trị bệnh nhiễm virus. Uống kháng sinh trong trường hợp nhiễm vi khuẩn. Trao đổi với bác sĩ về các nguyên nhân khác gây sốt.

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If someone in your household or workplace has been ill in the recent past, you may have picked it up from them. Children often spread illnesses to each other, and may catch a cold or the flu from friends at school or the playground. If you know that the other person’s illness resolved on its own, you can relax a bit. Your illness will likely also resolve with rest and plenty of water. If the illness doesn't resolve on its own, you want to be able to give the doctor a detailed log of how the fever has behaved. They may be able to use that information to diagnose you with a specific illness. For example, you may assume you have a simple cold, but after a week, your fever spikes suddenly. Odds are you have a secondary bacterial infection like an ear infection or pneumonia. Some cancers, like non-Hodgkin lymphoma, on the other hand, cause a fever at night, but none during the day.  Make sure to take your temperature multiple times every day until the fever recedes. Night fevers may be a sign of tuberculosis or HIV/AIDS. Make note of anything that seems out of the ordinary, even if it doesn't make you feel ill, necessarily. Unexpected weight change, for example, can point to several causes. Your other symptoms may be able to point to the organ system being affected, which will narrow the field for diagnosis.  For example, a cough suggests a lung problem like pneumonia. Burning during urination points to a kidney infection. Give your temperature log and list of symptoms to your doctor, who will try to diagnose the cause of the fever. They will do a physical examination will provide further clues about the source of the fever. The history you provided and physical exam will help the doctor narrow down the possible causes. The causes can be easily confirmed or ruled out with lab analysis or imaging. Common tests your doctor may order include a physical examination, white blood cell count, urine analysis, blood cultures, and a chest X-ray. Cold and flu are by far the most common viral infections doctors see. However,...