A temperature of 100.4°F (38°C) or higher is generally considered unsafe for a baby and requires medical attention. Additionally, a rectal temperature below 97.7°F (36.5°C) is also concerning.
Here's a breakdown of what constitutes an unsafe temperature for a baby and what to do:
Unsafe Temperatures for Babies:
-
High Temperature (Fever):
- 100.4°F (38°C) or higher (rectally): This is the most commonly cited threshold. If your baby's rectal temperature reaches or exceeds this level, it's considered a fever and warrants a call to your pediatrician.
-
Low Temperature (Hypothermia):
- Below 97.7°F (36.5°C) (rectally): A temperature this low can indicate a serious problem, especially in newborns.
When to Seek Immediate Medical Attention:
Regardless of the specific temperature, seek immediate medical attention (e.g., go to the ER) if your baby exhibits any of the following symptoms in addition to a fever:
- Trouble breathing
- Difficulty feeding
- Unusual sleepiness or lethargy
- Seizures
- Rash
- Dehydration (signs include fewer wet diapers than usual)
Important Considerations:
- Age: Newborns (especially those under 3 months) are more vulnerable to complications from fevers or low temperatures. A fever in a newborn requires immediate medical evaluation.
- Method of Measurement: Rectal temperatures are the most accurate for infants. Other methods (axillary/armpit, temporal artery/forehead) are less accurate and should be confirmed with a rectal temperature if a concern arises.
- Individual Variation: Normal body temperature can vary slightly from baby to baby. It's helpful to know your baby's usual temperature when they are well.
In summary, both excessively high and low temperatures can be unsafe for a baby. Consult a healthcare professional immediately if you are concerned about your baby's temperature or if they exhibit any accompanying symptoms.
