virus that causes fever for 5 days - #14978
I am feeling really stressed cause my son just had this weird illness. He was totally fine one day, and then the next, he started running a fever. It was a low-grade one at first, but then it shot up over the next few days. We took him to the doc after about three days cause the fever just wouldn't let up. The doctor said it might be a "virus that causes fever for 5 days," told us to keep an eye on him and just manage the fever with some over-the-counter stuff. He’s also been really tired, more than usual, and just kind of lethargic. The strange part is he had no other symptoms like a cough or runny nose, just the fever. The doctor mentioned that some viruses linger around and cause these extended fevers, but I’m worried. What could this "virus that causes fever for 5 days" be? Like, how do we know it's not something worse or if it’s going to go away? I mean, he’s been drinking fluids and resting, but should I be looking out for other signs or any specific things to monitor? This whole thing is just kinda freaking me out, and I wish I had more clarity here.
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Doctors’ responses
It sounds like the doctor suspects your son might be dealing with a viral infection, which is indeed a common cause of fever that can last several days. Viral infections, such as those caused by adenovirus or enterovirus, can commonly lead to symptoms like fever and fatigue without necessarily producing respiratory symptoms like a cough or runny nose. It’s positive that he’s maintaining hydration and getting rest, which is key during such illnesses. As you watch his condition, the most important thing to monitor is any significant change in his symptoms. High fevers can fluctuate, but if his fever remains persistently high (above 39°C or 102°F) for more than 5 days, or if new symptoms arise—such as a rash, difficulty breathing, extreme tiredness, or irritability—it would be prudent to seek medical attention again. Also, observe for any signs of dehydration, such as dry mouth, increased thirst, or decreased urine output, as these may require further intervention. On the other hand, if he starts to show improvement—reducing fever, gradual return of his energy levels, and normal appetite—it’s likely that the virus is resolving, which usually happens with supportive care like fluids and fever reducers (as advised by the doctor). Trusting your instincts is crucial in these situations, as parents often can tell when something doesn’t seem right beyond what medical advice might capture. If anything persists or worsens beyond the norm, follow up with your healthcare provider for further evaluation.
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