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Fever in Kids: When Fever is More Than Just a Fever

Fever in Kids

Fever is a common symptom that most parents will face at some point in their child’s life. It signals the body’s response to something happening within, most frequently, an infection, and in many cases, it resolves on its own without much concern.

However, as a parent, it’s natural to worry when your child has a fever. How high is too high? If you’re unsure, this guide is here to help. Learn more about fever, when it’s something more and what to do if your child has one.

What is a Fever?

A fever is when a child’s body temperature rises above the normal range. While the normal body temperature of each person varies, a temperature above 37.5°C (taken from the axilla or from the ear) or 38°C (taken rectally) is considered a fever. It is a common symptom of many illnesses, such as viral infections (like the flu or cold), bacterial infections, or even teething in infants.  

Fever can be uncomfortable, but it is important to remember that it is just a symptom. It is more important to focus on the cause of the fever, rather than how high the fever is. 

How to Take Your Child’s Temperature

How to Use Ear Thermometer
The easiest ways to take the temperature of a child older than 6 months are using an aural (ear) thermometer or a digital thermometer placed under the armpit (axillary).
How to Use Axillary Thermometer
For infants younger than 6 months, take the axillary temperature using a digital thermometer. Although oral and rectal temperatures are more accurate, they can be more difficult to take. A child older than 4 years may be able to cooperate with a digital thermometer placed under the tongue.
How to Use Infrared Thermometer
Forehead infrared scanners are not reliable for measuring body temperature. Always follow the instructions provided with the thermometer for the most accurate reading.

Causes of Fever in Children

Fever in children can result from many different factors. The most common causes include:

  • Viral Infections: The most frequent cause of fever in children, including colds, flu, and other respiratory infections.
  • Bacterial infections: Less common than viral infections but often more serious. Examples include ear infections, urinary tract infections (UTIs), and pneumonia.
  • Teething: Babies may develop mild fevers while teething, though these fevers are usually low-grade.
  • Vaccinations: It is normal for some children to develop a temporary fever after receiving vaccinations.

Inflammatory conditions can also cause fever, but these are less common.

When to Be Concerned

While a fever itself is not usually dangerous, it’s important to know when to seek medical help. Here are some guidelines:

For Babies and Infants under 3 months old:

  • A fever of 38°C (100.4°F) or higher is a serious concern. If your baby has a fever, go to the Children’s Emergency immediately, as it could be a sign of a serious infection.

For Older Children:

  • High Fevers: Fevers above 41°C (105.8°F) can be dangerous and warrant immediate medical attention at the Children’s Emergency. High fevers can cause discomfort, dehydration, or more serious complications.
  • Duration: If the fever lasts more than 2–3 days without any other symptoms, or more than 5 days with respiratory symptoms, it’s time to see a doctor.
  • Other Symptoms: If your child has a fever along with worrying symptoms such as lethargy, rash, difficulty breathing, severe headache, persistent vomiting, or poor feeding, seek medical attention promptly.

Go to the Children's Emergency immediately if your child:

  • Has a temperature higher than 41°C, or 38°C if under 3 months old.
  • Has a fever accompanied by severe difficulty breathing, persistent vomiting, or seizures.
  • Shows signs of dehydration (e.g., very lethargic, very little urine, or crying without tears).
  • Has a rash that looks unusual and is spreading rapidly.
  • Is drowsy, confused, unresponsive, or crying inconsolably.

General Care Tips for the Home

Does Drinking Water Help Reduce Fever

Here are some helpful tips to make your little one feel more comfortable when they have a fever at home:

  • Keep the room cool and well-ventilated: A cool room helps lower your child’s body temperature.
  • Use light clothing: Dress your child in comfortable, lightweight clothes and avoid bundling them up.
  • Hydration is key: Fever can cause dehydration, so offer your child plenty of fluids.
  • Avoid Cold Baths: Some parents may think that giving their child a cold bath can help lower their fever, but this can cause shivering and discomfort, which may raise their body temperature. Stick to lukewarm water if you decide to bathe your child.
  • Give fever medication if they are feeling uncomfortable: Give your child fever medication only if they are more than 3 months old. Avoid Aspirin.

Conclusion

Fever is common in children, and we hope this guide helps you better understand how to manage and care for your child through different stages and situations. Please note that this guide is for informational purposes only and should not replace professional medical advice. If you ever feel uncertain or concerned about your child’s health, don’t hesitate to consult our doctors at SBCC Baby and Child Clinic for personalised guidance. Your child’s well-being is the most important priority, and seeking medical advice early ensures the best care.

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