Updated February 09, 2019 by Taber Koeghan

The 8 Best Ear Thermometers

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We spent 46 hours on research, videography, and editing, to review the top choices for this wiki. Gone are the days when we feared a child might bite down and get a mouthful of mercury. Today's ear thermometers deliver digital readings accurately, quickly, and with updated modern features, such as smartphone linkage for data management. For consistent results, be sure to peruse the instructions to learn how to properly place these handy gadgets in the ear canal. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best ear thermometer on Amazon.

8. Pyle Digital

7. EZ Temp Dual Mode

6. Braun ThermoScan 5

5. Kinsa Digital Smart

4. iProven Medical

3. Loverbeby Accuracy

2. Best Medical

1. Braun ThermoScan 7

What Happens In Your Body During A Fever?

When a bone breaks, the fibrous connections of which the bone is comprised have been severed.

The human body has incredible ways of keeping itself alive. Millions of years of evolution have naturally selected traits and capabilities that, applied in their most extreme fashion, seem like the stuff of science fiction.

Take a broken bone, for example. When a bone breaks, the fibrous connections of which the bone is comprised have been severed. The bone itself bleeds (remember, bones are what make your blood, which is another fascinating result of evolution), and the coagulation of specialized cells around the fracture creates a safe healing environment. Over the next few weeks, your body begins to rebuild tissue around the fracture, eventually growing new bone and healing itself.

The same thing happens more visibly when you suffer an injury to your skin. That scab over a small cut creates the same quality of healing environment that surrounds a broken bone. This is why it’s usually a bad idea to pick at a scab, in addition to the fact that doing so will often result in a more visible scar.

If this kind of healing were to take place in seconds, as opposed to days and weeks, our cuts, breaks, and other injuries would pose next to no threat to our physiology beyond the psychological effects of pain. We would essentially be like Wolverine, but without the adamantium-coated skeleton.

When a pathogen enters your body, a number of things happen to fight it off. Your body identifies the invader and deploys white blood cells to kick it out. For many invaders this process goes on undetected, as your body’s innate and developed antibodies can knock out a great many potential illnesses before they take hold and cause you to develop symptoms.

If your body’s defenses aren’t up to the task invisibly, you’ll begin to notice any variety of symptoms, including a fever. Many invaders are susceptible to heightened temperatures, and the difference in body temperature between 98.6 and 102 degrees can often be enough to weaken them to the point of destruction. Your body informs the hypothalamus (one of your brain’s generals in the war against infection and the effort to maintain homeostasis) that it needs a temperature increase, and the hypothalamus accommodates. The more resilient the infection, the higher the fever is liable to rise and the longer it’s liable to last.

The Importance Of Keeping An Eye On Your Temperature

Given the knowledge that your body raises its temperature in an effort to destroy dangerous invaders, it might be tempting to pile on the blankets and turn up the heat in an attempt to burn out the infection. While the logic of this might seem sound at first, it’s important to know that your body can only withstand a certain degree of temperature increase before other parts of your physiology begin to suffer.

It can result in confusion, vomiting, rapid breathing, fainting, and even death in very young and very old patients or those with weakened immune systems.

The dangers of a high fever are particularly potent in children and infants whose immune systems aren’t yet fully developed. While an adult can withstand body temperatures in the vicinity of 103 or 104 degrees, infants whose body temperatures exceed 100.4 degrees should immediately see a doctor, as this can be a sign of a life-threatening infection. If a child’s temperature reaches above 103 degrees, there is a significant risk of seizure.

In adults, fever from infection or a lapse in the body’s ability to regulate its temperature can result in hyperthermia. Hyperthermia is usually diagnosed in patients with temperatures in excess of 104 degrees. It can result in confusion, vomiting, rapid breathing, fainting, and even death in very young and very old patients or those with weakened immune systems.

All of these dangers make it absolutely vital that you keep an eye on the temperature of anyone who exhibits symptoms of bacterial or viral infections. Even symptoms that might be misdiagnosed as allergies (runny or stuffy nose, headache, etc.) can be the overture to a much more dangerous illness. As soon as symptoms arise, it’s important to take a patient’s temperature to ensure they aren’t at risk of developing more severe symptoms and to put them on the proper course of treatment. An in-ear thermometer is especially accurate and easy to use, making it ideal for in-home temperature monitoring.

Monitoring a patient’s temperature throughout the course of an illness is just as vital as ascertaining it at the outset. Sudden spikes in fever can indicate the body’s inability to handle an invader on its own as well as a negative reaction to an administered medication.

Illness isn’t the only time a person should have their temperature checked, either. After the introduction of new medications for anything from allergies to depression, there is the risk of significant side effects. Heat stroke is also commonly accompanied by a rise in body temperature, so if someone feels weak or faint after spending too much time outside in the heat, definitely take their temperature.

A Brief History Of Thermometers

Before the thermometer as we know it came along, several inventors including Galileo Galilei developed something known as a thermoscope. This device, which came about toward the end of the 16th century, could show its user that something was getting hotter or colder, but it contained no set measurements.

A Swedish astronomer named Anders Celsius came along to rain on Fahrenheit’s parade, however, when he introduced a scale of his own.

An Italian inventor named Santorio Santorio was the first man to place a scale of any kind onto a thermoscope, essentially creating the modern thermometer. It was even used to take people’s temperatures by placing it beneath their tongues.

Daniel Gabriel Fahrenheit, a German physicist active in the early 18th century, added a scale to the mercury thermometer that would remain a standard means of measurement through to today. A Swedish astronomer named Anders Celsius came along to rain on Fahrenheit’s parade, however, when he introduced a scale of his own. This system, known as the centigrade scale, became the go-to means of measurement for the majority of the world.

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Taber Koeghan
Last updated on February 09, 2019 by Taber Koeghan

Taber is a writer from Santa Monica, CA, with a bachelor of arts in political science from the University of California, San Diego. After completing her degree, she began writing and editing copy for a host of high-traffic e-commerce websites. Her areas of expertise include the beauty, style, pet, and home products categories, and she has plenty of experience covering literature and art, too. Her personal interests in crafting and decorating inform her writing and -- she hopes -- add a good bit of insight to her work. Outside of copywriting, she is a reporter and columnist at a Los Angeles community newspaper and is currently pursuing a master of fine arts in creative writing.


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