Characterized by irritable bowel syndrome, patients may experience abdominal pain, diarrhea or constipation, bloating, psychiatric symptoms, and stomach discomfort. Abdominal pain: Abdominal pain is one of the main symptoms, mostly in the lower abdomen, the pain site can change, less likely to attack at night. Diarrhea or constipation: some patients may have persistent or intermittent diarrhea, and some may have constipation symptoms such as difficulty in defecation and dry stools. Abdominal bloating: Patients usually have more obvious abdominal bloating during the day, which is reduced at night. Mental symptoms: patients may experience symptoms such as upset, anxiety, depression, insomnia, etc. Stomach symptoms: some patients may experience burning sensation in the stomach, nausea and other symptoms. If the patient has unexplained abdominal pain and diarrhea or abdominal distension and constipation and other symptoms, it is recommended to consult a regular hospital in a timely manner, relevant examinations, diagnosis and treatment depending on the specific conditions.