When is Fever a cause for concern in Children?

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When is Fever a cause for concern in Children?

Jan 22, 2025

Fever is a common concern among parents. Understanding what constitutes a fever and recognizing the signs that warrant immediate medical attention can help parents navigate this stressful situation.

What is a Fever? A fever is defined as a body temperature of 38°C (100.4°F) or higher. It is typically a response to an infection, signaling that the immune system is actively fighting off germs or rarely due to inflammatory process in the body. Most fevers in children are due to minor viral illnesses and usually resolve within 2 or 3 days. However, some fevers can indicate more serious underlying conditions.

Red Flag Signs:

Certain signs should prompt immediate medical attention.
1. Infants under 3 months: Any fever above 38°C (100.4°F) requires immediate evaluation
2. Fever accompanied by a non-blanching rash, neurological weakness, or neck stiffness
3. Any fever associated with drowsiness, fits, not waking up, or incessant crying
4. A child with fast breathing, grunting, and severe chest indrawing
5. A child who looks pale, or blue or has a mottled appearance


In addition to red flag signs, there are amber signs that suggest the need for a pediatrician's opinion but may not require immediate emergency visits.

  • Infants aged 3-6 months: A documented temperature above 39°C should be taken seriously
  • Fever associated with pallor, decreased activity, swelling of the joint, dehydration, vomiting, loose stools, painful urination
  • Persistent Fever: A fever lasting longer than 3 to 5 days
  • Fever with poor oral intake/ dehydration, cough with mild breathing difficulty

Fever is a common symptom in children and often indicates that the body is fighting an infection. While most fevers are not serious, parents can give oral paracetamol as advised and do tepid sponging with lukewarm water to reduce temperature as a sudden increase in fever can cause fits in young children.


Our 24/7 Consultant Led Advanced Pediatric Emergency Services are always prepared to handle any health emergency your child may face!

Dr. Divya Srirangarajan

Consultant General Pediatrics & Pediatric Emergency

Rainbow Children's Hospital

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