Right colitis can present with diarrhea, abdominal pain and other symptoms. 1. Diarrhea: Diarrhea is the main clinical manifestation of this disease. Mucus or pus and blood stools, the severity of the disease varies, the milder 3 to 4 times a day, the more serious may be dozens of times. In severe cases, there is a large amount of watery diarrhea, up to 30 times a day. In a few cases, there is pus and blood in the stool. 2. Abdominal pain: in mild cases, abdominal pain is not obvious. The pain is mainly located in the right side of the abdomen, and the pain will be relieved after defecation. 3. Others: some patients may have anemia, emaciation, fatigue, insomnia and other symptoms. If you have the above symptoms, you should consult the doctor in time to avoid complications such as intestinal obstruction, toxic megacolon and colon cancer, and to improve the prognosis.