How to Check Body Temperature of an Infant at Home

To ascertain the fever of an infant at home, a digital thermometer is the recommended tool. Rectal temperature checks tend to yield the most precise results for infants; however, caregivers must adhere to their healthcare provider's advice and the thermometer's manufacturer's guidelines. Employ a thermometer specifically intended for the chosen technique.

Mercury thermometers should be avoided, as they can shatter and subject the infant to hazardous mercury exposure. Ensure the thermometer is clean and operational by following the manufacturer's instructions. Prior to the temperature check, make the infant relaxed and refrain from measuring right after a bath, heavy clothing, or intense crying, if practicable.

Permit the baby to rest for a brief period. Unfasten any layers of clothing or blankets to permit the baby to rest comfortably. Choose the appropriate measurement method. For newborns, rectal temperature checks are typically the most reliable, but underarm measurements can also be utilized, albeit with somewhat reduced accuracy.

Avoid using oral thermometers for young infants. Ear thermometers may not be appropriate for extremely young babies unless the manufacturer explicitly states their suitability. Adhere to the recommended method for the baby's age. If instructed, opt for the underarm technique. Consult a healthcare professional if uncertainty arises.

When taking a rectal temperature, use a thermometer suitable for rectal use, apply a small amount of appropriate lubricant to the tip, and insert it only as far as directed by the manufacturer or your healthcare professional. Avoid forcing the thermometer and never leave the infant unattended during the process. Wash your hands before and after the measurement.

For underarm temperature readings, position the thermometer tip high in the baby's armpit, against bare skin, and hold the baby's arm close to the body until the thermometer indicates the measurement is complete. Record the temperature, time, and method employed. Maintaining a log can assist in identifying any alterations in the baby's temperature and provide valuable information when consulting a healthcare professional.

Document the temperature, the corresponding time, and the measurement method. Recognize when to seek medical assistance. Infants under three months of age with a rectal temperature of 38°C (100.4°F) or higher are typically considered to have a fever, even if the infant appears otherwise healthy. Immediate medical attention is warranted if the infant exhibits difficulty breathing, extreme sleepiness, seizures, a concerning rash, poor feeding, signs of dehydration, or appears seriously unwell.