How do different types of thermometers work?

Thermometers come in several types, each using a different method to measure temperature. Mercury thermometers use a glass tube filled with mercury that expands with heat. Digital thermometers use electronic sensors to detect body temperature, giving a digital readout. Infrared thermometers measure the heat emitted by the body without direct contact, often used for quick readings. Each type has its advantages, with digital and infrared thermometers generally being easier to use and quicker to read.

How do I use a thermometer correctly?

To get an accurate reading, it’s important to follow the instructions for your specific thermometer. For oral thermometers, place it under the tongue and keep the mouth closed. For rectal readings, gently insert the thermometer about 1-2 cm into the rectum. If using an ear thermometer, gently place it in the ear canal. For infrared thermometers, point it at the forehead or other areas as directed. Always make sure the thermometer is clean before use to avoid any errors.

What should I do if my thermometer shows a high temperature?

If your thermometer indicates a high temperature, it’s a sign of fever, which can be caused by various factors such as infections. If you have a fever, it’s advisable to monitor your symptoms and stay hydrated. Over-the-counter medications like paracetamol can help reduce fever, but always consult with a healthcare professional to ensure it’s suitable for you, especially if you have any underlying health conditions or are taking other medications. If the fever persists or is very high, seek medical advice.