High temperature with a cold or flu
A high temperature (fever, usually 38°C or above) is the body’s normal response to fighting a virus. On its own, a fever is not dangerous for most healthy adults and older children and usually lasts one to three days with a cold or flu.
Looking after yourself
- Drink plenty of water — small sips often if you feel sick
- Rest and keep cool — remove excess layers, but do not sponge with cold water
- Paracetamol or ibuprofen if you feel uncomfortable — they do not shorten the illness but can help you feel better
- Check on children regularly through the night
When to get medical help
Use NHS 111 online, call 111, or contact your GP if:
- A baby under 3 months has any fever, or a baby under 6 months has a fever of 39°C or higher
- A fever lasts more than five days
- You have a long-term condition or are pregnant
- You feel very unwell, or a child is drowsier than usual and not drinking
Call 999 or go to A&E if someone has a fever plus a stiff neck, a rash that does not fade under pressed glass, difficulty breathing, a fit, or is very drowsy and hard to wake.
Further information
This page provides general information only. It is not a diagnosis and is not a substitute for professional medical advice.