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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Fever And Lethargy?

My son is 4 years old and has been just laying around on the couch all day. He has a low grade fever and that s it. He got up for alittle but today to play but that s been all! He is drinking but not eating much. Tonight he has been squinting his eyes. Could it be because he is tired?
Wed, 29 Oct 2014
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Pediatrician 's  Response
Hello. I just read through your question. The most common diagnosis is a harmless viral illness. Fever usually lasts 2-3 days before resolving. The fatigue could last a day or two longer. afterwards, his strength will return. Decreased appetite is expected, but he is hydrating, as you mentioned. Hydration is very important. If the fever lasts beyond 2-3 days, I recommend consulting with your doctor as a precaution.
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What Causes Fever And Lethargy?

Hello. I just read through your question. The most common diagnosis is a harmless viral illness. Fever usually lasts 2-3 days before resolving. The fatigue could last a day or two longer. afterwards, his strength will return. Decreased appetite is expected, but he is hydrating, as you mentioned. Hydration is very important. If the fever lasts beyond 2-3 days, I recommend consulting with your doctor as a precaution.