Q: My child with asthma has a prolonged mild fever after a pneumonia diagnosis. The X-ray is improving, but the temperature fluctuates. Is this normal recovery?
- Myeongchan Kim
- 15 hours ago
- 3 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 has had a prolonged mild fever and I don't know what to do. They generally have a higher basal body temperature and also have asthma. Here is a brief timeline of the situation:
Initial visit: Went to the clinic for a cough and phlegm.
Following 5 days: Experienced a mild fever ranging from 37.7°C to 37.9°C.
Diagnosis Day: Tested negative for the flu but was diagnosed with pneumonia. Blood test results were relatively fine despite the fever.
Day 4 post-diagnosis: Temperature dropped to around 37.5°C all day.
Day 5 post-diagnosis: Temperature went back up to 37.7°C - 37.8°C.
Day 6 post-diagnosis: Pneumonia pathogen test results came back negative (no mycoplasma or other specific bacteria). The X-ray showed the pneumonia is still present, but the doctor said it is improving enough that we don't need to come back. They mentioned the fever intervals are getting longer, which means the child is recovering. After this last prescription, my child will have been on antibiotics for almost 10 days, so the doctor said we can stop taking them.
However, today the temperature is back up to 37.9°C. Should we get another blood test? Or is my child just in the process of healing? I am not sure what the right judgment is in this situation.
Answer:
It must be very anxiety-inducing to see a prolonged mild fever while your child is being treated for pneumonia.
Current Situation Summary:
Antibiotics were taken for about 10 days after a pneumonia diagnosis, and the X-ray shows improvement.
The pathogen test was negative, suggesting a high possibility of viral pneumonia.
The temperature dropped but recently fluctuated back up to 37.7°C - 37.9°C.
Your child has an underlying condition of asthma.
What to Check at Home Right Now:
Activity level: Check if your child is playing, eating, and sleeping well.
Breathing: Look out for shortness of breath or if the skin under the ribs is sucking in (retractions) when they breathe.
Cough/Phlegm: Monitor if the cough is worsening or if there are any color changes in the phlegm.
Urine output: Ensure they are urinating at least 4 to 6 times a day.
When to Seek Immediate Re-evaluation:
Please visit your pediatrician today if any of the following occur:
The fever spikes again to 38°C or higher.
Breathing difficulties or wheezing becomes severe.
The cough worsens, or there is an increase in thick yellow or green phlegm.
Your child becomes lethargic, refuses to eat, or has significantly decreased urine output.
They complain of chest or abdominal pain.
If the Above Symptoms Are Absent and Your Child is Active:
With viral pneumonia, it is common for a mild fever to linger for 1 to 2 weeks even after the X-ray shows improvement.
Ensure your child gets plenty of hydration and rest.
Maintain indoor humidity between 40-60%.
Continue to use their asthma management medications (like inhalers) exactly as prescribed.
Monitor the temperature and symptoms for another 2 to 3 days.
In summary, if your child is playing well and breathing comfortably, there is a high chance they are simply in the normal recovery process. However, if you notice any of the "red flag" symptoms mentioned above, or if the mild fever persists for more than 3 additional days, please follow up with your pediatrician for a physical reassessment and to discuss whether further testing is necessary.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
