If the patient exists in a situation where the back pain is so severe that he or she is afraid to bend over, it may be due to the presence of an acute lumbar injury, urologic pathology, or peripheral neuropathy. The specific causes are as follows: 1. Acute lumbar injury: the patients may be in the process of using lumbar force, or in the process of falling from a high place, caused by acute lumbar sprain or lumbar vertebrae fracture type of trauma. After that, the patient will have severe pain in the lower back, and do not dare to bend over. 2. Urological lesions: when patients have urinary tract infections or stone-like lesions, such as pyelonephritis, ureteral stones and other lesions, it may be due to the severe stimulation of the relevant visceral nerves, which in turn causes the above symptoms. In addition, these patients may also have fever, hematuria and other symptoms. 3. Peripheral neuropathy: This kind of patients may be affected by hereditary factors or acquired degeneration of lumbar vertebrae, trauma and so on, which leads to the stimulation of the nerve roots related to lumbar vertebrae, and then causes the above symptoms. For example, when the patient has lumbar disc herniation, lumbar spinal stenosis and other peripheral neuropathy, there will be such symptoms. It is recommended that patients should not continue to move their backs after the occurrence of these conditions, but should ask their family members to help them and go to an orthopedic clinic as soon as possible to clarify the cause of the condition.