Irritable Bowel Syndrome (IBS) is one of the most common functional gastrointestinal disorders. Its primary symptoms are abdominal pain and changes in bowel habits and stool characteristics. The abdominal pain is related to bowel movements, meaning that the pain tends to decrease after defecation. These symptoms are a major manifestation of IBS. IBS rarely causes lower back pain. If lower back pain occurs, it is important to consider diseases that commonly cause this symptom, such as lumbar disc herniation, lumbar muscle strain, and kidney diseases like kidney stones and renal colic. Therefore, it is crucial to first identify the specific cause of the lower back pain before proceeding with targeted treatment. IBS is generally not associated with symptoms of lower back pain.