Norovirus, also called the "winter vomiting bug", is a stomach bug that causes vomiting and diarrhoea. It can be very unpleasant, but usually goes away in about 2 days.
The main symptoms of norovirus are:
- feeling sick (nausea)
- being sick (vomiting)
You may also have:
- a high temperature
- a headache
- aching arms and legs
The symptoms start suddenly within 1 to 2 days of being infected. The NHS guidance on Norovirus can be found here.