Q: Why does my child have a normal temperature in one ear but 38°C in the other after a fever?

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 had a fever for two days but is maintaining a normal body temperature today. However, when I check their temperature, one ear shows a normal reading, while the other ear reads 38°C. The warmer ear also feels physically warm to the touch. Why is this happening?

Answer:

It is completely understandable to be concerned when one ear continues to measure at 38°C and feels warm even after your child's overall fever has subsided.

Here are a few reasons why this temperature difference might occur:

• Otitis Media (Ear Infection): Even after a systemic fever resolves, localized inflammation from an ear infection may still be present in one ear.

• Measurement Factors: Minor variables such as earwax buildup, the angle of the thermometer probe, or the child having recently laid on that specific ear can artificially raise the reading.

• Differences in Blood Flow: Lying on one side for an extended period or localized irritation can cause increased blood flow, making one ear warmer than the other.

Things you can monitor at home:

1. Notice if your child touches, pulls at, or rubs their ear, or if they seem unusually fussy.

2. Check if there is any fluid or discharge coming from the ear canal.

3. Wait about 10 minutes (making sure the child is not lying on the warm ear) and try re-measuring the temperature in both ears.

When to visit a doctor:

• Your child shows signs of ear pain, such as crying or fussing when the ear is touched.

• You notice any ear discharge.

• Your child shows signs of decreased hearing or is unresponsive to normal sounds.

• The temperature difference between the two ears persists for more than 24 hours.

Since your child had a fever for two days prior to this, it is highly recommended that you visit a pediatrician to check for otitis media. Because it is impossible to determine the exact cause without looking inside the ear canal, an in-person physical examination is the best way to accurately assess the situation and ensure your child gets the proper care.

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

🌐 Also available in: Español · 한국어