Stomach flu (gastroenteritis), is an irritation and inflammation of the stomach and bowel that is usually caused by a virus such as norovirus, parasites or bacterial food poisoning. Gastroenteritis is very common condition that causes diarrhoea and vomiting.
Symptoms of gastroenteritis include:
- abdominal cramps;
- stomach pain;
- vomiting (which can be projectile);
- sudden, watery diarrhoea.