Q: My 3rd grader has a recurring fever with no other symptoms. Should we get a blood test or X-ray?

Medically reviewed by Sang Hyun Ahn, 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, who is in the 3rd grade, had a fever last Friday. When we visited the clinic, the doctor noted that my child had the flu two weeks prior. We were prescribed antibiotics and other medications, with the plan to retest for the flu if the fever didn't subside. The fever did drop temporarily, but for the past three days, my child has been running a fever again, ranging from 38.2°C to 38.4°C.

The only symptoms are the fever and a slightly stuffy nose; there is no pain anywhere else. My child's general condition is fine, and the fever drops after taking fever reducers. I am not sure why an elementary schooler would only have a fever without other major symptoms. Should we ask for a blood test or an X-ray to figure this out?

Answer:

You must be very worried that your 3rd-grade child has had a fever twice in one week. It must be especially frustrating since the fever keeps repeating without other symptoms.

Current situation assessment:

• 38.2-38.4°C is a moderate fever

• Good condition and active = positive sign

• Good response to fever reducers = possibility of a common infection

• Flu 2 weeks ago → possibility of another viral infection

Possible reasons for this pattern:

1. Consecutive infection - Another virus due to lowered immunity after the flu

2. Reinfection - Another virus circulating at school

3. Bacterial infection - New infection after finishing antibiotics

🏥 When a return visit to the hospital is recommended:

→ Fever lasts for more than 3 days (today is the 3rd day)

→ Temperature rises above 39°C

→ New symptoms appear (headache, stomachache, rash, etc.)

→ General condition worsens (visit immediately)

A blood test is helpful in finding the cause of the fever. In particular, CRP and CBC tests can distinguish between bacterial and viral infections. A chest X-ray is not mandatory if there is no cough.

At home: Ensure plenty of hydration, provide rest, and keep a record of your child's body temperatures. It would be best to check their condition tomorrow morning and visit the hospital.

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

https://fevercoach.us