causes of child nausea dehydration
Causes of dehydration in children. 1  Dehydration is most often caused by a viral infection that causes fever, diarrhoea, vomiting and a decreased ability to drink or eat. 2  Common viral infections causing vomiting and diarrhoea include rotavirus or winter vomiting disease (norovirus). 3  Sometimes sores in a child's mouth caused by a virus make it 4  ... Mor