digital thermometer
Digital thermometer

Why should I take my temperature?

Checking your body’s temperature with a thermometer is an easy way to see if a fever is present. A fever, which is a rise in the body’s temperature, is usually caused by an infection. Though fevers can be uncomfortable, they are a sign that the body is fighting off infection.

There are many different types of thermometers you can use to measure temperature. When using any kind of thermometer, make sure you read and follow the instructions that come with the thermometer. If your thermometer uses batteries, check them. You might notice that weak batteries give inconsistent readings.

 

What is a normal body temperature?

Normal body temperature is about 98.6 degrees Fahrenheit (°F) or 37 degrees Celsius (°C). Normal temperature often varies from 1° to 2°F (½° to 1°C). A normal temperature is usually lower in the morning and increases during the day. It reaches its high in the late afternoon or evening.

What temperature is considered a fever?

In adults, a fever is considered to be a temperature of 100.4°F (38°C) or above. You can treat this at home with a fever reducer medication and fluids to make yourself more comfortable, or let it run its course. But if it reaches 102°F (38.8°C) or higher and home treatment doesn’t lower it, call your healthcare provider.

What types of thermometer should I use to take a temperature?

Digital thermometer

A digital thermometer is the most accurate and quickest way to take a temperature. Digital thermometers are available in most drug stores and supermarket pharmacies. Depending on where you shop, a digital thermometer can cost from $6 to $20. Be sure to follow package instructions while using any thermometer.

Digital thermometer for taking your temperature

Digital thermometer

How to use a digital thermometer?

A digital thermometer can be used three different ways. These include:

  • Oral: For this method, the thermometer is placed under the tongue. This method is used for adults and children 4 and over who are able to hold thermometer in mouth.
  • Rectal: For this method, the thermometer is inserted gently into the rectum. This is mostly done in babies but can used in children up to 3 years of age. You can take rectal temperatures in children older than 3 years, but it might be difficult to keep them as still as they need to stay.
  • Axillary: For this method, the thermometer is placed in the armpit for young children or adults whose temperature can’t safely be done orally. This method is not as accurate as oral or rectal but can be used as a quick first check. You can follow this with an oral or rectal reading.

Other types of thermometers (young children and adults):

Tympanic (ear): This type of thermometer measures the temperature inside of the ear by reading the infrared heat there. For best results, make sure to follow the instructions on the device about placing the tip correctly. For older babies and children, ear thermometers can be quicker and easier to use. However, they are not recommended if your baby is three months old or younger. They should not be used if your child has too much earwax, or if they have an earache.