1. Low back pain Low back pain is the first symptom that occurs in most patients with this disease, with an incidence of about 91%. A few patients have only leg pain without low back pain, so that not every patient will definitely have low back pain. There are also some patients who have low back pain first and then leg pain after a period of time, while the low back pain reduces or disappears on its own, and when they come to the clinic, they only complain of leg pain. The pain is mostly stabbing pain, often accompanied by numbness and soreness in the legs and feet. 2. Lower limb radiating pain Low back pain is easy to attack after trauma, exertion and cold, each time for about 2 to 3 weeks, and can be gradually relieved. The pain is often relieved by resting in bed during the attack. People who engage in heavy physical labor, especially those who repeatedly bend over, have a high chance of having low back pain. People who lack exercise and have poor muscle strength in the low back are prone to low back pain even if they occasionally bend over to lift heavy objects or sprain their back. Any factors that increase abdominal pressure, such as coughing, forceful defecation, laughing, sneezing, lifting heavy objects, chronic coughing, etc., are likely to trigger low back pain, or aggravate the already occurring low back pain. 3, restricted lumbar activities The forward flexion and backward extension activities of the lumbar spine in patients with lumbar disc herniation are closely related to the degree of disc herniation. If the annulus fibrosus is not completely ruptured, the lumbar spine takes the forward flexion position and the posterior extension is limited. The reason for this is that when the lumbar spine is flexed forward, the ligamentum flavum between the vertebral plates is tensed, increasing the volume of the spinal canal and the posterior space of the intervertebral space, and the corresponding increase in tension of the posterior longitudinal ligament makes the herniated nucleus pulposus partially return, thus reducing the symptoms of nerve root compression. 4, scoliosis This is a postural compensatory deformity adopted by patients with lumbar disc herniation to reduce pain. The lumbar vertebrae are bent to the left or right, and the spinous process can be distorted by touching the spinous process in the middle of the back, but this is not a unique sign of lumbar disc herniation, as about 50% of normal people also have a distorted spinous process of the spine. 5, intermittent claudication The claudication that occurs in lumbar disc herniation is mostly intermittent, that is, pain and weakness in the lower limbs after walking a certain distance, and the symptoms can be relieved after bending down or squatting to rest, and can still continue to walk. With the passage of time, the symptoms gradually and slowly aggravate, before the appearance of the above-mentioned symptoms of standing time or walking distance gradually shorten the shorter the walking distance, the more serious the disease. 6. Sensory numbness Some patients with lumbar disc herniation do not experience pain in the lower extremities, but only numbness in the extremities, which is mostly caused by the compression of the proprioceptive and tactile fibers of the nerves by the disc tissue. The lateral thigh is a common area of numbness and can have a burning sensation when in contact with clothing and pants, and prolonged standing can aggravate the numbness. The cause of sensory disturbances in the lateral thigh is most often due to a bulging annulus fibrosus or joint degeneration and not due to a herniated disc.