What are the main causes of diarrhea in children?

Pediatric diarrhea is one of the common diseases in children. Autumn and winter are the peak seasons for pediatric diarrhea. Because it often occurs in autumn and winter, it is usually called "autumn diarrhea". This disease has an acute onset and is mostly caused by rotavirus infection, often accompanied by fever and upper respiratory tract infection symptoms. What are the causes of this disease?

Common causes of diarrhea include:

1. Immature digestive system The digestive system of infants and young children is immature and the enzyme activity is poor, but the nutritional needs are relatively high and the intestinal burden is heavy. Improper feeding, such as excessive feeding of starch and fat foods, resulting in changes in composition, or eating too much at one time, can cause digestive disorders and lead to diarrhea.

2. Immature immune function. The nervous system, endocrine system, circulatory system, liver and kidney functions of infants and young children are immature, their regulatory functions are poor, and their immune functions are not mature enough. When pathogens enter the body with contaminated food, it is easy to cause diarrhea.

3. Rotavirus infection Infant autumn diarrhea is mainly caused by rotavirus infection (pathogenic microorganisms can enter the baby's digestive tract with contaminated food or water). This situation often occurs in artificially fed babies. If the utensils or food used for feeding are not disinfected or are not disinfected well, there is a possibility of infection. The virus can also be transmitted through the respiratory tract or water sources. This situation often occurs from August to December, with the peak in October to November.

4. Large temperature differences: The temperature in autumn varies greatly, sometimes hot and sometimes cold. Climate change can cause colds, cold abdomen, and various infections, which can also lead to diarrhea.

The main symptoms of autumn diarrhea in children are frequent, large, and watery stools, yellow watery or egg-drop-shaped stools with a small amount of mucus and no fishy smell. Autumn diarrhea has three clinical characteristics, namely cold, vomiting, and diarrhea. There are no obvious symptoms of poisoning. Vomiting may occur at the beginning of the disease, often before diarrhea. There is no specific drug for rotavirus.