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Q: My child's fever keeps coming back after recovering from the flu. Should we see the doctor again?

  • Myeongchan Kim
  • 37 minutes ago
  • 2 min read

Medically reviewed by Sang Hyun Ahn, MD

Content edited by Myeongchan Kim, MD


This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.


Question:

My child was diagnosed with the flu two weeks ago. The fever subsided after taking flu medication for five days, but afterward, their runny nose and cough actually worsened. Since then, the fever has been coming and going every couple of days. We went to the clinic and are giving them the prescribed symptom relief medication, but whenever we stop the fever reducer, the fever returns after two days. Should we go back to the doctor?


Answer:

I understand how concerning it must be to see these symptoms persist for two weeks.


Based on your description—where the fever temporarily resolved after five days of flu medication, but was followed by an increase in a runny nose and cough, along with an intermittently recurring fever—there are two main medical possibilities to consider:


  1. A secondary bacterial infection (such as an ear infection, sinusitis, or pneumonia)

  2. An overlapping viral infection (catching a different virus while the immune system is recovering)


When to see a doctor immediately (Today):

Please take your child in for an in-person evaluation if any of the following apply:

• The fever lasts for more than 3 consecutive days or spikes above 38.5°C (101.3°F).

• Ear pain or thick, yellow nasal discharge persists for more than 10 days.

• The cough progressively worsens, or there is wheezing, panting, or difficulty breathing.

• The child refuses fluids/food or has not urinated for over 8 hours.

• The child is unusually lethargic, weak, and not playing as usual.


Home care guidelines for now:

• Offer frequent, small sips of water (a sip every 5-10 minutes to stay hydrated).

• Use saline nasal drops and an aspirator to gently clear out mucus.

• Maintain optimal indoor humidity between 40-60%.

• Give fever reducers only when the child is visibly uncomfortable or in pain, rather than trying to eliminate the fever completely.


What to discuss at the clinic:

When you visit your pediatrician, it would be helpful to ask:

• "Is there a possibility of a secondary infection? Could you check their ears, sinuses, and lungs?"

• "Are antibiotics necessary at this point, or is it safe to continue observing?"


If none of the severe warning signs mentioned above are present and your child is eating and playing well, you can start by calling your pediatrician's office to discuss the ongoing symptoms. Since the illness is lingering, it is safest to consult with a doctor to determine the appropriate timing for a follow-up physical examination and to ensure your child fully recovers.


For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.






 
 
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