Q: My child has Influenza A and the fever is rising to 39.9°C even after taking a fever reducer. What should I do?

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:

Hello doctor. We just came back from the hospital, and my child was diagnosed with Influenza A. We received fever reducers and a single-dose flu medication. The fever was very high, so I gave the fever reducer first, but the temperature isn't dropping—it actually went up to 39.7°C. Should I give the flu medicine now?

(Update: The fever went up to 39.9°C, so I just went ahead and gave the flu medication).

It is terrifying that the fever isn't coming down despite the medicine. What should I do?

Answer:

Hello. It is completely understandable to be worried when your child is struggling with a high fever from Influenza A.

You did the right thing by giving the flu medication. With influenza, it is very common for a fever to remain high and not respond well to fever reducers during the first 24 to 48 hours. Influenza A, in particular, is characterized by persistent high fevers.

Here is what you can do at home right now to help manage the fever and keep your child comfortable:

• Cross-class dosing of fever reducers: If your child is over 6 months old, you can alternate acetaminophen and ibuprofen, spacing the different medications about 3 to 4 hours apart.

• Hydration: Offer small sips of water or electrolyte drinks every 10 to 15 minutes to prevent dehydration.

• Light clothing: Dress your child in a single layer of thin, breathable clothing.

• Cool environment: Maintain a comfortable indoor temperature around 24–26°C (75–79°F).

⚠️ Go to the Emergency Room immediately if your child experiences any of the following:

• Difficulty breathing or chest pain

• Altered consciousness or unresponsiveness (e.g., lethargy, not making eye contact, or not answering normally)

• Signs of severe dehydration (e.g., no urination for more than 8 hours)

• Seizures

The fever should begin to subside within 24 to 48 hours after taking the flu medication. Until then, focus on keeping your child as comfortable as possible using fever reducers and ensuring they stay hydrated. If the fever persists beyond this timeframe, symptoms worsen, or you are unsure about the correct medication dosages for your child's weight, please consult your pediatrician for an in-person evaluation.

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

fevercoach.us

Apple App Store

Google Play

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