Is the forehead thermometer accurate?

Temperature detection is a very important matter in life, because body temperature has a great impact on the health of the body. Too high or too low body temperature may directly threaten life safety. Therefore, it is necessary to pay attention to abnormal body temperature. Monitoring body temperature is a very important step, and there are many ways to do it. People often like to monitor their temperature on the forehead. Let’s see if using a forehead thermometer is accurate?

Forehead thermometer is a very commonly used thermometer in daily life because it is more convenient and hygienic than other thermometers. Although people generally choose this type of thermometer, they don't know much about its accuracy.

If people want to use a forehead thermometer, it is best to use an infrared one, which is more accurate. Although forehead thermometers are not very accurate, there are many types of thermometers, such as glass mercury thermometers, electronic thermometers, infrared thermometers, etc. There are five parts of the human body that can be used to measure body temperature, namely the armpit, forehead, ear canal, mouth and rectum. Each thermometer measures a different temperature. Mercury-in-glass thermometers are the most accurate. Traditional glass mercury thermometers can be used to measure armpit temperature as well as oral and rectal temperature. These degrees are more accurate than forehead thermometers.

Why can we know body temperature by forehead temperature measurement?

The internal temperature of the human body is referred to as body temperature. Clinically, it is the average deep temperature. It is mainly maintained constant throughout the body through the central nervous system and blood circulation, and is reflected in the surface temperature. The forehead is close to the heart and is supplied with blood from the aorta and carotid artery via the temporal artery. The blood circulation is fast and can reflect changes in body temperature in a timely and accurate manner. When you have a fever, the brain is the first to be affected. When the body temperature rises or drops, the brain begins to regulate the temperature first, and the temperature on the surface of the forehead is also quickly reflected. But if you feel your forehead is hot but your body temperature is normal, this only means that your immunity is low and you don't necessarily need medication. It is recommended to strengthen nutrition, eat a reasonable diet, eat more vegetables and fruits, exercise regularly, and gradually improve your body's resistance. This means that forehead temperature is sometimes inaccurate, so people should not use forehead temperature to measure body temperature often.