Taking someone’s temperature is one of the most common ways to check for fever in both children and adults. It is usually the first step when someone has symptoms such as shivering, fatigue, or signs of infection. However, many people are unsure which method provides the most accurate result. Temperature can be measured in several places, including the armpit, forehead, ear, or rectum.
Taking Temperature Under the Arm
Measuring temperature under the arm, also known as the axillary method, is one of the oldest techniques. It is simple and commonly used, especially for newborns and young infants whose armpits are usually dry.
To use this method, place the thermometer horizontally in the armpit and hold the arm firmly against the chest to trap body heat. The thermometer should remain in place until the reading appears.
Because this method tends to measure slightly lower than the actual body temperature, it is common to add about 0.5 degrees Celsius to the result to estimate the true temperature.
Taking Temperature on the Forehead
Forehead temperature can be measured using either a contact thermometer or a non-contact infrared thermometer. This method is quick, easy, and comfortable, which makes it widely used in public places, clinics, and schools.
However, forehead readings can sometimes be less accurate. External conditions such as room temperature, wind, sweat, or direct sunlight may influence the measurement.
To take a reading, hold the thermometer a few centimeters away from the forehead, depending on the device’s instructions. Press the button and wait about one second for the result to appear. For better accuracy, the measurement can be repeated several times.
Taking Temperature Rectally
The rectal method is widely considered one of the most accurate ways to measure body temperature. It is commonly used for infants and young children when precise results are important.
In this method, a digital thermometer is gently inserted about two centimeters into the rectum. Using a small amount of lubricant can help make the process more comfortable for infants.
Because this area is sensitive, temperature should not be taken too frequently to avoid irritation.
Taking Temperature in the Ear
Ear thermometers use infrared technology to measure heat from the eardrum. This method is generally accurate and provides quick results.
Ear temperature measurement is usually recommended for adults and children over the age of two. In younger children, the ear canal may be too small, and earwax can sometimes affect the hearing.
To take the temperature, gently pull the outer ear upward and slightly backward to straighten the ear canal. Insert the thermometer tip into the ear, wait for the device to signal that the reading is complete, and then check the display.
Final Thoughts
Each temperature-taking method has its advantages and limitations. While forehead and armpit measurements are convenient, ear and rectal readings are often considered more accurate. The best option usually depends on the person’s age, the situation, and the level of precision needed.