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Q: My 5-year-old's ear thermometer shows mid-38°C but their forehead feels cool. Why is this and when should we see a doctor?

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:

Illustration for the question: My 5-year-old's ear thermometer shows mid-38°C but their forehead feels cool. Why is this and…

My 5-year-old child has had a fever since yesterday. Last night, their temperature was under 38.5°C, their forehead felt warm to the touch, and they seemed to be struggling. Right now, they are eating and playing well, but when I check with an ear thermometer, it shows a temperature in the mid-38°Cs. Strangely, their forehead doesn't feel warm at all. I am sure I am using the thermometer correctly. Why is there a difference between the ear reading and how the forehead feels? Also, when should I take my child to see a doctor?


Answer:

I understand you must be worried since your child's fever has been continuing since yesterday.


Here is a breakdown of your current situation:

  • An ear thermometer reading in the mid-38°Cs indicates a true fever.

  • The reason your child's forehead might not feel as hot is that skin temperature can fluctuate depending on room temperature, sweating, and blood flow, which can make it feel cooler to your hand.

  • The fact that your child is currently eating and playing well is a very positive sign.


Here is what you can do at home right now:

  • Offer water or electrolyte drinks frequently in small amounts to keep them hydrated. A good goal is to maintain a pale yellow urine color.

  • Dress your child in a single, light layer of clothing and keep the room at a comfortably cool temperature.

  • If your child seems uncomfortable, you can give them fever reducers (such as acetaminophen or ibuprofen). Always prioritize improving your child's comfort over just lowering the numbers on the thermometer.

  • Avoid wiping them down with wet towels or giving tepid water baths.


You should seek immediate medical attention if you notice any of the following:

  • Your child has difficulty breathing (e.g., chest retractions under the ribs or nasal flaring).

  • They have not urinated for 8 hours or more, or their lips are very dry (signs of dehydration).

  • They are extremely lethargic, constantly lying down, or failing to make proper eye contact.

  • The fever lasts for more than 3 days, or new symptoms develop, such as a rash, severe vomiting, or a headache.


For now, focus on keeping your child hydrated and rested while you observe them for another day. If the fever continues tomorrow or if you notice any of the warning signs mentioned above, please visit your pediatrician for an in-person evaluation.

Illustration for a doctor's answer about: My 5-year-old's ear thermometer shows mid-38°C but their forehead feels cool. Why…

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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