Your Baby's Temperature: When to Worry and How to Care

Baby's body temperature

My baby's body temperature ranges from 36.3 to 36.7 degrees Celsius, usually around 36.4.
The nurse at the hospital where I gave birth mentioned that my baby's temperature is lower than that of most infants.
Sometimes, when he cries very hard, his hands and feet turn purple.
If I wrap his hands and feet in a blanket, they improve after a while, but sometimes I notice he is sweating.
How can I determine if he is being wrapped too much?

Mr. Lu, 40~49 year old female. Ask Date: 2016/10/09

Dr. Xiao Kaiwen reply Pediatrics

Such a body temperature is not significantly low.
As long as the appetite and activity levels are normal, I believe it is acceptable.
Typically, infants a few months old have not fully matured in their autonomic nervous system and peripheral blood circulation, making their body temperature susceptible to external environmental temperatures.
Infants can easily sweat, so it is best to use lightweight, moisture-absorbing cotton for their clothing.
However, there is no strict standard for how many layers of clothing they should wear.
The important principle is that if adults feel hot, infants should not be overdressed; conversely, if adults feel cold, it is appropriate to add an extra layer to the infant's clothing.

Reply Date: 2016/10/09

More Info

Understanding your baby's temperature and overall health is crucial for new parents. It's important to note that a baby's normal body temperature can range from approximately 36.1°C to 37.2°C (97°F to 99°F). Your baby's temperature of 36.3°C to 36.7°C is within this normal range, albeit on the lower end. However, it is essential to monitor any changes in behavior or physical signs, such as skin color and temperature fluctuations.

When you mention that your baby’s hands and feet sometimes appear purple, this could be a sign of poor circulation or a response to temperature changes. Newborns have immature circulatory systems, and their extremities can often feel cooler or appear discolored, especially when they are upset or crying. This is usually not a cause for alarm if the baby’s core temperature remains stable and they are feeding well and active. Wrapping your baby in a blanket can help maintain their body heat, but it’s crucial to ensure that they are not overheated.
To determine if your baby is bundled too warmly, you can follow these guidelines:
1. Check the Core Temperature: Use a digital thermometer to measure your baby's temperature rectally, which is the most accurate method for infants. If the temperature is above 38°C (100.4°F), this could indicate a fever, and you should consult a pediatrician.

2. Feel the Back of the Neck: Instead of relying solely on your hands to gauge warmth, feel the back of your baby's neck. It should feel warm but not hot. If it feels sweaty or excessively warm, your baby may be too hot.

3. Observe Behavior: If your baby seems fussy, lethargic, or unusually irritable, this could be a sign that they are uncomfortable due to being too hot or too cold. A happy, active baby is generally a good sign.

4. Layering: Dress your baby in layers that can be easily added or removed. A good rule of thumb is to dress your baby in one more layer than you would wear in the same environment.

5. Monitor Sweating: If your baby is sweating, it may indicate that they are too warm. Remove a layer of clothing or adjust the room temperature accordingly.

6. Consult a Pediatrician: If you have ongoing concerns about your baby's temperature or skin color, it’s always best to consult with a pediatrician. They can provide personalized advice based on your baby's specific health needs.

In summary, while your baby's temperature is within a normal range, the occasional purple coloration of the hands and feet can be typical for infants, especially when they are upset. However, consistent monitoring and using appropriate clothing and wrapping techniques can help ensure your baby remains comfortable. Always trust your instincts as a parent; if something feels off, don’t hesitate to seek professional medical advice.

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