Irritable bowel is irritable bowel syndrome, irritable bowel syndrome early symptoms include abdominal pain, diarrhea and constipation. 1. Abdominal pain: usually accompanied by abnormal stool frequency or shape abdominal pain is mostly relieved after defecation, the patient after eating abdominal pain occurs in any part of the abdomen, limited or diffuse, the nature of the pain is different. 2. Diarrhea: continuous or intermittent diarrhea, feces is paste less, containing a lot of mucus; fasting after the disappearance of the symptoms can also appear diarrhea constipation alternating phenomenon. 3. Constipation: irritable bowel syndrome can also appear difficult to defecate, dry stools, small amount, can bring a lot of mucus, constipation may be intermittent or diarrhea and constipation alternates with the feeling of defecation. Patients with irritable bowel syndrome who experience the above symptoms are advised to seek prompt medical attention to identify the cause of the disease and target treatment.