Most children will suffer from diarrhea at some point during childhood. The usual culprit is an infection that is not dangerous and passes within a short time, according to Kids Health. Infections that cause watery diarrhea in children are most often spread through dirty hands, contaminated food or touching the toilet or another person's feces. Watery diarrhea in children can be caused by several different bacteria or viruses and can be treated at home. If the diarrhea persists, causes a fever or dehydration, contact the child's doctor.
Rotavirus
Dr. Sears says that rotavirus is one of the most common causes of watery diarrhea in children. It is more prevalent in the fall and winter. Rotavirus results in very bad smelling and persistent watery diarrhea that can last for several weeks. It can also produce a fever and vomiting. Rotavirus is passed quickly among children in daycare centers or hospitals. Children can now receive from their pediatrician a vaccine that helps prevent rotavirus.
Food Poisoning
A child who suffers from food poisoning will have watery diarrhea. This occurs when a food that is eaten is contaminated with bacteria, a virus or a parasite such as salmonella or E.coli. The diarrhea will appear soon after the food has been consumed, and stomach cramps will often accompany the diarrhea. Food poisoning is usually short-lived and doesn't require medical intervention. However, according to Keep Kids Healthy, it can lead to dehydration, kidney stones and even death. If a child appears dehydrated as a result of food poisoning, he likely needs medical care right away. Dehydration symptoms in children include less activity than normal, extreme thirst and lack of sweat or urination.
Lactose Intolerance
A child who has an intolerance to milk will likely have watery diarrhea when it is consumed. Being lactose intolerant means a child will have to avoid milk and products made with milk. According to Keep Kids Healthy, some children can tolerate small amounts of lactose, while others cannot have any without a severe reaction. The diarrhea that results from lactose intolerance can lead to weight loss in children; eat alternatives to milk instead to prevent symptoms.
