Low back pain is very common in the clinic, there are many causes of low back pain, must be clear causes in order to get the best treatment, the following is to introduce several common causes of low back pain for your reference: spinal lesions 1, lumbar disc herniation: young adults are common, lumbar 4 segments to sacral 1 segments prone. It usually has a history of trauma and can occur suddenly or slowly. The main clinical manifestations are lumbar pain and sciatic nerve pain, which can develop simultaneously or separately. 2, degenerative spondylitis, also known as proliferative spondylitis: more common in patients over 50 years of age, morning lumbar pain, soreness, stiffness and inconvenience of movement, pain will improve after the activity of the back, but the pain increases again after too much activity. The pain is obvious in the evening, and there is a comfortable feeling when tapping the lumbar area, and there is no obvious pressure pain in the lumbar spine. 3, lumbar spinal stenosis: also known as lumbar spinal stenosis syndrome, mostly occurs in middle-aged people over 40 years old. It is often asymptomatic at rest, and after walking for a certain distance, symptoms such as pain, numbness and weakness of the lower limbs appear, which are relieved after squatting or sitting down for a period of time before continuing to walk. With the aggravation of the disease, the walking distance becomes shorter and the time needed to rest becomes longer. 4, ankylosing spondylitis: autoimmune disease, early symptoms are lower back pain with morning stiffness, often accompanied by sacroiliac joint pain and limited spinal movement, X-ray combined with blood tests can confirm the diagnosis 5, tuberculous spondylitis: more common, back pain accompanied by generalized hypothermia, night sweats, fatigue, lack of appetite, etc., some patients may have a history of tuberculosis. Complete imaging and blood tests can confirm the diagnosis. 6, spinal tumors: metastatic tumors are more common. 7, acute pain: lumbar spine fracture due to trauma. Tissue lesions next to the spine 1, lumbar muscle strain: often due to incomplete treatment after lumbar sprain or cumulative injury, patients feel lumbosacral pain and dull pain, which is relieved at rest and aggravated after exertion. The pain is obvious especially when working bent over, but can be relieved when stretching or massaging the waist. There is no radiating pain and numbness in the lower limbs, which needs to be differentiated from lumbar disc herniation. 2, lumbar muscle fibrositis: often due to cold, humidity, chronic strain caused by the lumbar back fascia and muscle tissue edema, fibrous degeneration. Patients feel diffuse pain in the lumbar back, mainly in the muscles on both sides of the lumbar spine, which is aggravated in the morning and improves after a few minutes of activity, but the pain increases again after too much activity. The pain can be relieved by tapping on the lumbar region. Spinal nerve root lesions 1. Spinal cord compression: seen in herniated discs, primary or metastatic tumors in the spinal canal, epidural abscesses, etc. Patients often feel pain in the neck and back or lumbar pain and radiates along the distribution area of the nerve roots, the pain is intense, burning-like or strangulation-like pain, the pain will increase during spinal activities, coughing and sneezing, there are certain parts of the pain all the time also can have sensory impairment. 2, subarachnoid hemorrhage: blood from the subarachnoid space can cause severe low back pain when it stimulates the dura mater and nerve roots. 1, urinary system diseases: urinary tract stones, nephritis, pyelonephritis, tuberculosis, tumors, etc., kidney stones are mostly colic, percussion pain is intense; pyelonephritis lumbago is distinct, percussion pain is obvious; kidney tumors cause low back pain more than dull pain or swelling pain, sometimes is colic. 2, pelvic organ diseases: prostatitis and prostate cancer in men often cause lower lumbosacral pain, accompanied by frequent and urgent urination, etc.; chronic adnexitis, cervicitis, uterine prolapse and pelvic inflammatory disease in women can cause lumbosacral pain. Digestive system diseases and respiratory system diseases can also cause pain in the lower back to be excluded with care.