A child may have fluid deficiency when they have stomach illness or diarrhea. Give the child something to drink, preferably as soon as the child has become ill. Liquid is often enough, but sometimes the child needs fluid replacement.
Dehydration occurs when the body gets rid of more fluid than you supply it. It is most common among young children, older people or people who have tried hard physically when it is very hot.
Vomiting and diarrhea are the most common symptoms when children have stomach upset. The disease is almost always harmless and goes away within a couple of days. It is important that the child gets fluid, especially if the child has severe diarrhea at the same time. This is especially true for children under one year.
Stomach illness often comes quickly with vomiting, diarrhea and nausea. Although you may feel very bad, stomach ailments are rarely serious. Most often it is enough to rest and to drink a lot.