Fever is not a disease; it is a sign the immune system is working. Fever caused by infection does not raise body temperature to a level that damages the brain — the body itself caps it. Heat-related brain injury happens in heat stroke (heat forced on the body from outside), not in the fever of flu.

In short — what to do

  1. Any fever in a baby under 3 months — the ER at once, however well they look.
  2. Marked lethargy, difficulty waking, or complete refusal to drink.
  3. Difficulty breathing, or a rash that does not fade under a clear glass.
  4. A seizure, or fever lasting more than 3 days.
  5. Neck pain and stiffness with sensitivity to light.

This topic’s video is coming soon on our channels — follow us

@lahzaem
Watch the child, not the number — an active, drinking child beats a high reading
Watch the child, not the number — an active, drinking child beats a high reading
The full details

So what do we watch?

Watch the child, not the number. A child at 39 who plays, drinks and responds is less worrying than one at 37.8 who is listless, not drinking and not engaging. The number alone tells you neither the severity nor the cause.

What is antipyretic for?

The child’s comfort — not reaching a particular number. If they are comfortable, drinking and playing, there is no need to chase the reading with medicine.

Myths that harm — never do these

  • Alcohol rubs — absorbed through the skin and toxic; absolutely forbidden.
  • Ice water or a cold bath — causes shivering that drives the temperature back up.
  • Heavy covering to "sweat it out" — traps heat and raises it.
  • Aspirin in children — forbidden (risk of Reye’s syndrome).
  • Alternating antipyretics hourly without counting — increases overdose risk.

Still — when is fever truly an emergency?

  • Any fever in a baby under 3 months — the ER at once, however well they look.
  • Marked lethargy, difficulty waking, or complete refusal to drink.
  • Difficulty breathing, or a rash that does not fade under a clear glass.
  • A seizure, or fever lasting more than 3 days.
  • Neck pain and stiffness with sensitivity to light.

Febrile seizures

They terrify every parent — but most are benign and leave no mark on the brain, and it is the speed of the rise, not the height, that triggers them. See the febrile seizure guide for what to do during one.

This content is for general health education only and is not medical advice. Always seek guidance from a qualified healthcare professional. In an emergency, call 998.

← All topics