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Using advice from our partner St John Ambulance
The nation’s leading first aid charity.
As a new parent, it’s natural to feel worried when your baby has a fever. Fevers are common in babies and young children and are often the body’s natural response to fighting off an infection. While most fevers resolve on their own within a day or two, it’s important to know how to monitor your baby’s temperature and provide the right care. This guide will help you understand the symptoms, causes, and steps to manage a fever safely.
Symptoms of Fever in Babies
Common signs of fever in babies include:
- A persistently high temperature above 38°C (100.4°F)
- Feeling cold or shivering
- Goosebumps
- Chattering teeth
Common Causes of Fever in Babies
Fevers can be caused by various infections or illnesses, such as:
- Flu
- Ear infections
- Urinary tract infections (UTIs)
- Chickenpox
- Whooping cough
- Roseola
- Tonsillitis
How to Check Your Baby’s Temperature
Use a reliable thermometer to measure your baby’s temperature accurately. Digital thermometers are recommended over mercury thermometers as they are safer and easier to use. Other useful features to look out for when buying a children’s thermometer include a non-contact feature as well as a backlit display, this allows you to take your child’s temperature easily throughout the night without disturbing them.
Check out our award-winning Ear and Forehead Thermometer to find out more.
What to Do If Your Baby Has a Fever
- Keep them cool and comfortable, dress your baby in lightweight clothing to avoid overheating.
- Ensure the room is cool and well-ventilated, check on your baby frequently, including during the night.
- Keep them hydrated and offer plenty of fluids. For breastfed babies, feed them regularly to replace lost fluids.
- Keep an eye out for signs of dehydration, such as fewer wet nappies or a dry mouth.
- Use infant paracetamol if needed. If your baby is uncomfortable, give them the recommended dose of paracetamol syrup. Always follow the dosage instructions.
- Monitor their symptoms, regularly check their temperature, breathing, and level of alertness.
When to Seek Medical Advice for a Fever
When to contact 111 or your GP for a fever:
- Your baby is under 3 months old with a temperature above 38°C.
- Your baby is 3-6 months old with a temperature over 39°C.
- The fever lasts more than five days.
- Your baby shows signs of dehydration, such as dry nappies.
When to contact 999 for a fever in babies:
- Has a stiff neck.
- Develops a rash that doesn’t fade with the glass test.
- Experiences a seizure for the first time.
Final Thoughts on Managing Your Baby’s Fever
While a fever can be distressing, it’s often a sign that your baby’s immune system is fighting an infection. By using a reliable thermometer to monitor their temperature and following these care tips, you can help your little one feel better.
Always trust your instincts as a parent. If you’re unsure or worried, don’t hesitate to seek medical advice.
