Diagnostic criteria for irritable bowel syndrome

The diagnosis of irritable bowel syndrome (IBS) is usually based on three aspects: symptoms, changes in bowel habits, and abnormalities in bowel function. 1. Symptoms 1. Abdominal pain or discomfort: Pain or discomfort relieved after defecation, but does not affect appetite or weight. 2. Changes in bowel habits: Diarrhea, constipation, or alternating diarrhea and constipation. 3. Accompanying symptoms: Such as abdominal distension, loss of appetite, palpitations, insomnia, etc. Second, the change of defecation habits 1, the change of defecation frequency: the number of defecation increases or decreases, more than 3 times a week or 3 times a day. 2, the change of defecation characteristics: abnormal stool characteristics, including loose stool, watery stool, hard stool, etc. 3, the change of defecation feeling: including stool meaning urgency, urgency, etc. 4. Associated symptoms: abdominal distension, loss of appetite, palpitations, insomnia, etc. 3. Abnormal intestinal function 1. Abnormal intestinal motility: such as too fast or too slow intestinal peristalsis. 2. Abnormal intestinal secretion: such as too much or too little intestinal mucus secretion. Combining the above three aspects, the diagnosis of irritable bowel syndrome needs to meet the following criteria: at least two of the following symptoms: Abdominal pain or discomfort, changes in bowel habits, accompanying symptoms. Other bowel diseases are ruled out by relevant tests, such as blood tests and colonoscopy.