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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes High Fever And Extreme Fatigue?

I've had a fever, as high as almost 102, with extreme fatigue, no appetite, and alternating sweats and feeling cold. Today is the 3rd day, and I am feeling a bit better. I called my doctor and she said it's probably just a virus, but the fever means infection. My doctor just thinks I'm too anxious, but since I haven't had a fever in decades, I feel pretty worried. Are these just symptoms of some common virus that's going around? I have no respiratory symptoms at all.
Mon, 29 Dec 2014
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Internal Medicine Specialist,  's  Response
Fever can indicate infection with either viruses or bacteria. Your other symptoms are nonspecific. Without any other specifics, such as a sore throat, productive cough, etc, the condition is most often ascribed to a virus. There are always lots of viruses going around and no way (or particular reason) to identify them. Most of these viral syndromes clear up on their own in a few days to a week or so. There is no need to be concerned unless the symptoms persist after that time frame or more specific symptoms start to manifest. You are already feeling better, so your doctor is most likely correct. It's just a virus and should resolve shortly. However, if you continue to have fevers past a week or so, or more specific symptoms develop, ask your doctor again about it. Hope this helps.
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What Causes High Fever And Extreme Fatigue?

Fever can indicate infection with either viruses or bacteria. Your other symptoms are nonspecific. Without any other specifics, such as a sore throat, productive cough, etc, the condition is most often ascribed to a virus. There are always lots of viruses going around and no way (or particular reason) to identify them. Most of these viral syndromes clear up on their own in a few days to a week or so. There is no need to be concerned unless the symptoms persist after that time frame or more specific symptoms start to manifest. You are already feeling better, so your doctor is most likely correct. It s just a virus and should resolve shortly. However, if you continue to have fevers past a week or so, or more specific symptoms develop, ask your doctor again about it. Hope this helps.