The causes of vomiting and diarrhoea are most likely to be food poisoning, contaminated water, allergies or unusual or exotic foods.

Treatment

1. Reassure the casualty while he or she is being sick. Afterwards, give the casualty a warm damp cloth with which to wash him or herself.
2. Give the casualty lots of bland fluids to slip slowly and if the appetite returns, give them bland, starchy or sugary food for the first 24 hours.