fever and tempature

[Ju]

What are the differences between :

She has a temperature.

She has a fever.


Ju

[Raymott]

What are the differences between :

She has a temperature.

She has a fever.


Ju

Everyone has a temperature, but not everyone has a fever.
Colloquially, people might say, "She has a temperature" meaning "She has an elevated termperature", and this would normally be understood. But 'fever' is better, for obvious reasons.