Enteritis is mostly caused by bacterial or viral infections, with typical symptoms being abdominal pain and diarrhea. The bacterial or viral infection causes congestion and edema of the mucous membrane in the intestines, leading to a reduced function in digesting and absorbing food. If the bacteria or virus is particularly virulent, it can damage the intestinal mucosa and cause bloody stools. Enteritis is a common characteristic of many diseases, such as Crohn's disease, ulcerative colitis, and infectious diarrhea. Clinically, the treatment mainly involves the use of antibiotics and medications to stabilize the intestines and stop diarrhea. Prolonged diarrhea can lead to dehydration, which requires timely rehydration. (Medication should be used under the guidance of a doctor.)