There are many causes of lumbar pain, and you should go to the hospital promptly in the following cases. 1.When low back pain occurs after a fall or a fall from a height, along with uncontrollable bowel movements and weakness in the legs and feet, a lumbar fracture should be highly suspected. At this time, you should call 120. 2. When there is numbness, pain and other abnormalities in the legs and feet at the same time as lumbar pain, you should consider lumbar disc herniation. In this case, an orthopedic surgeon should be called. 3.When there is red urine and vulvar pain at the same time as lumbar pain, consider the possibility of kidney stone. This is the time to find a urologist. 4. If you have low back pain and your back is stiff when you stand up after getting up or sitting for a long time, you cannot rule out the possibility of ankylosing spondylitis. This disease often occurs in young men (16 to 25 years old is the most prevalent age group), mostly manifested as pain or stiffness in the lower back in the morning or when standing up after sitting for a long time, but reduced after activity. It is possible to visit the Department of Rheumatology and Immunology to exclude this possibility. 5, women with low back pain and a feeling of abdominal swelling, may be caused by pelvic infection, some gynecological inflammatory disease. In this case, you need to pay attention to the presence of leucorrhea abnormalities. If necessary, you can go to the obstetrics and gynecology department for consultation. 6. If the back pain is accompanied by long-term fever, the possibility of lumbar spine tuberculosis cannot be ruled out. Usually, symptoms such as poor appetite, fatigue and weight loss may also occur in lumbar spine tuberculosis. If the above symptoms exist, it is recommended to consult the orthopedic department in a timely manner. 7. If lumbar back pain is accompanied by urinary urgency, painful urination and fever, it may be a urinary tract infection. It is recommended to visit the urology department. 8.People with osteoporosis will also have low back pain. Also patients with osteoporosis are likely to have compression fractures due to some small movements (such as bending over, big sneeze). If osteoporotic patients have unrelieved low back pain, it is recommended to visit orthopedics. The cause of low back pain in office sitters and manual laborers (especially workers who need to bend over to lift heavy objects) is usually lumbar muscle strain. Low back pain caused by lumbar muscle strain can be prevented and relieved by paying attention to sitting posture, bending posture and lumbar back muscle exercise. If the back pain is not relieved after adjusting the posture, you should also go to an orthopedic surgeon.