Q: My 5-month-old baby frequently has a temperature of 37.4°C to 37.5°C. Is this normal?

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:

I have a question regarding my 5-month-old baby. I am wondering if their basal body temperature is just naturally high. It didn't seem like this when they were younger, but since 4 months of age, whenever I feel that the baby is a bit warm and take their temperature, it reads 37.4°C or 37.5°C. This happens quite often. Is this okay? Can a warm environment cause this kind of temperature frequently?

Answer:

It is completely understandable to be concerned about your 5-month-old baby's temperature. A reading of 37.4°C to 37.5°C is at the upper limit of the normal range, but it is not considered a fever.

Normal Temperature Range

• For a 5-month-old baby, the normal temperature range is 36.5°C to 37.5°C.

• Temperatures up to 37.5°C are considered normal, while 38.0°C or higher is classified as a fever.

• It is entirely normal for a baby's temperature to rise slightly in the afternoon, after physical activity, or right after feeding.

Common Reasons for Higher Temperature Readings

1. Excessive clothing or blankets: Babies generally need one less layer of clothing than adults. Overdressing can easily trap heat.

2. Room temperature: The optimal room temperature for a baby is between 22°C and 24°C.

3. Measurement timing: Temperatures tend to read higher immediately after a baby cries or feeds.

4. Measurement site: Keep in mind that armpit temperatures usually read slightly lower, while ear (tympanic) temperatures read higher.

To ensure your baby is comfortable, you can do a quick self-check: make sure they are eating and playing as usual, check that their hands and feet are adequately warm (not cold), and verify that they are not wearing too many layers of clothes.

When to Visit a Doctor

Please consult a pediatrician or seek medical evaluation if your baby experiences any of the following:

• A fever of 38.0°C or higher.

• Appearing unusually fussy, lethargic, or unresponsive.

• A noticeable decrease in feeding or appetite.

• Any other accompanying symptoms (such as cough, vomiting, or diarrhea).

If these 37.4°C - 37.5°C readings have been consistent since your baby was 4 months old, their basal body temperature might simply be on the slightly higher side. As long as your baby is active, feeding well, and has no other symptoms, you can safely continue to monitor them at home while keeping their environment cool and comfortable.

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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