Irritable bowel syndrome does not cause low back pain. If you feel low back pain, it may be caused by perforated gastric or duodenal ulcers or pancreatitis. The main symptom of irritable bowel syndrome is abdominal pain of varying degrees, mostly in the lower abdomen and lower left abdomen, accompanied by bowel difficulties, no obvious signs, may have light pressure pain, but does not cause low back pain. If you feel pain in the lower back, it may be caused by gastric or duodenal ulcers, which cause perforation of the back wall to stimulate the spinal peripheral tissues and nerves; pancreatitis can cause radiating pain in the lower back; in addition, lumbar intervertebral disc herniation, lumbar muscle strain, etc., can also cause pain in the lower back. It is recommended to consult a doctor in time to avoid missing the best treatment time.