Irritable bowel syndrome abdominal pain is more common in the lower and left lower abdomen. The pain caused by this disorder can be confined to one place or the entire abdomen can be uncomfortable in a variable location. Irritable bowel syndrome is a common functional bowel disorder, with the main symptoms being abdominal pain or discomfort, and changes in bowel habits and fecal character, which may be continuous or intermittent. The cause of the disease is not well understood, and may be related to abnormal gastrointestinal dynamics, abnormal brain-gut regulation, intestinal flora dysbiosis, mental and genetic factors, and other causes. Patients with irritable bowel syndrome may experience varying degrees of abdominal pain or abdominal discomfort, the location is variable, but generally more common in the lower abdomen and lower left abdomen, abdominal pain can be relieved after defecation or bowel movement. If patients have abdominal pain, diarrhea and other abdominal discomfort, they should consult a doctor in a timely manner to identify the cause of the disease and then treat it in a timely manner, and should not take medication without authorization in order to avoid delaying the condition.