Understanding Pediatric Fevers: What Parents Really Need to Know

When a child spikes a fever, it’s natural for parents to feel anxious. But, according to Dr. George Elliott, Emergency Department physician at MyMichigan Health, most fevers aren’t nearly as dangerous as many people fear. Here, Dr. Elliott breaks down what fevers actually mean, when to worry, and how to handle them safely at home.

Most Fevers Are Not Dangerous

One of the biggest misconceptions Dr. Elliott hopes to clear up is that fevers themselves are not harmful. “Not all fevers are bad. In fact, some people would say that no fevers are really that dangerous,” he explains. Fevers occur when the immune system detects an infection and sends signals—called pyrogens—to the brain. “Those signals go to an area in the brain called the hypothalamus, which is like our thermostat,” adds Dr. Elliott.

The result? The body intentionally turns up its temperature to help fight off infection. Because of this, Dr. Elliott emphasizes that parents should focus less on the number on the thermometer and more on the child’s behavior.

“What’s more important is to look at the child and see how they look, how they’re acting, what they’re doing,” he offers. “That is much more concerning than what the temperature is.”

Do All Fevers Need Medication?

When considering if all fevers need medication, the short answer is no. “A fever itself really doesn’t ever have to be treated,” Dr. Elliott clarifies. There’s no evidence that fever reducers make an illness go away faster. However, medication can help a child stay comfortable enough to rest, eat, and stay hydrated—so treatment can still be helpful.

As for alternating acetaminophen (Tylenol) and ibuprofen? Both methods are acceptable, as long as parents give the correct dose. “The more important thing is just to make sure they’re being dosed correctly,” he encourages. “Sometimes a parent will bring a child into the emergency department because their fever doesn’t seem to be responding to medication, and we find that they were actually just underdosed.”

When Do Fevers Become Dangerous?

Fevers caused by infection almost never rise above 104–105°F. Temperatures higher than that are usually due to hyperthermia—external heat exposure, like being left in a hot car—not an illness. “A fever from an infection is going to top out around 104 or 105 degrees,” Dr. Elliott clarifies. “Hyperthermia is completely different and treated differently.”

High temperatures from external heat can lead to seizures or even brain injury, but fever-related seizures—called febrile seizures—are usually less serious. “Most of them are from viruses. So, the seizure itself is generally not dangerous. Most patients only have one or two febrile seizures in their lifetime, and they’re done,” shares Dr. Elliott.

When Should a Child Be Seen by a Doctor?

A child’s behavior is the biggest indicator. If a fever comes down with medication and the child is playing, eating, and acting normally, it's usually safe to monitor at home. But Dr. Elliot advises urgent evaluation if the child:

• is not drinking or urinating normally
• remains ill-appearing even after fever medication
• is unusually sleepy, confused, or not acting like themselves

Certain children always need prompt evaluation:

• infants under 3 months old
• children who are immunosuppressed, such as those on chemotherapy

“Those kids need to be seen as soon as possible,” Dr. Elliott urges.

The Bottom Line

Most fevers are simply a sign the body is doing its job. The real question isn’t, “How high is the fever?” but “How is my child acting?” Understanding the difference can help parents stay calm—and know when to seek help. If parents ever feel unsure, Dr. Elliott reminds them: “We’re always happy to see people.”

Dr. George Elliott is the Chief of Staff at MyMichigan Medical Center Alma, as well as the Medical Director for the Emergency Department at MyMichigan Medical Center Alma and Mt. Pleasant.