Tempocool

For instance, fever is often referred to as the most common symptom of COVID-19
Be ready and keep TempoCool fever cooling sheet at home for emergencies

What can cause a fever/high temperature?
How should I measure my child's temperature?

The most common causes of fever in children in the UK are viral infections. There are many other uncommon causes. Some of these will show other obvious signs:

Infections with germs called viruses are the most common cause. Viral infections cause many common illnesses such as colds, coughs, flu, diarrhoea, etc. Sometimes viral infections cause more serious illnesses.
Infections with germs called bacteria are less common than viral infections but also cause fevers. Bacteria are more likely to cause serious illness such as pneumonia, joint infections (septic arthritis), urine infections, kidney infections, septicaemia and meningitis. However, bacteria can also cause fever in less serious infections such as ear infections and infected skin rashes.
Inflammatory conditions and reactions may cause fever, including Kawasaki disease, some types of arthritis, and reactions to some medicines.
Immunisations: sometimes children develop a fever after an immunisation. This is because immunisations are generally designed to 'trick' the body's immune system into thinking it sees an infection, so that it develops immunity. Fevers following immunisation are not usually high or prolonged.
Other types of infection: these include 'tropical' infections such as malaria and dengue, and conditions such as tuberculosis.
Heat stroke is a possible cause of raised body temperature, although technically this isn't a fever, as the body is being heated from the outside (whereas in fever the body does the heating itself).

How should I measure my child's temperature?

Forehead strip thermometers are not very accurate. Ideally you should use one of the following to measure your child's temperature:

Under 4 weeks old, with an electronic thermometer in the armpit.
Between 4 weeks and 5 years old:
With an electronic thermometer in the armpit.
With a chemical dot thermometer in the armpit.
With a digital thermometer designed to be placed in the ear.