The systemic symptoms of lumbar disc herniation mainly include pain in the low back, radiating pain in the lower extremities, numbness and abnormal sensation, muscle paralysis, intermittent claudication, and postural changes in the spine. The specific systemic symptoms of lumbar disc herniation are as follows: 1. Pain in the low back This pain appears before leg pain and can also appear at the same time. The pain is mainly in the lower back or lumbosacral region, and the cause of the pain is mainly due to the stimulation of the outer layer of the annulus fibrosus and the sinus nerve fibers in the posterior longitudinal ligament after the disc herniation. The pain is deep and difficult to locate, and is usually dull, stabbing or radiating pain. 2.Radiation pain in the lower limbs Since lumbar disc herniation mostly occurs in the lumbar 4, 5 and lumbar 5 sacral 1 intervertebral spaces, and the sciatic nerve comes from the lumbar 4, 5 and sacral 1-3 nerve roots, patients with lumbar disc herniation mostly have sciatica or start with the buttocks first and gradually radiate to the posterior lateral thigh, lateral calf, dorsal foot and lateral plantar and toe. The central type of herniation often causes bilateral sciatica. When the intra-abdominal pressure increases with coughing and urination and defecation, the radiating pain of the lower extremities is aggravated. 3, numbness and abnormal sensation After lumbar disc herniation, it can cause localized compression and traction compression in the nerve root contact area, which causes ischemia and hypoxia due to pressure on the fibers and blood vessels of the nerve root itself, so abnormal sensation such as pain and numbness occurs in the area innervated by the affected nerve root. 4, muscle paralysis The lumbar disc protrusions compressing the nerve roots for a long time can cause nerve root ischemia and hypoxia degeneration and nerve paralysis and muscle paralysis. Lumbar 4 and 5 disc herniation can cause paralysis of the anterior tibial muscle, peroneal long and short muscles, extensor hallucis longus and extensor digitorum longus muscles due to lumbar 5 nerve root paralysis. After lumbar 5 sacral 1 disc herniation, sacral 1 nerve root involvement paralysis and calf triceps paresis occurs. 5.Intermittent claudication Intermittent claudication and pain occur due to the compression of nerve roots by herniated discs, resulting in inflammatory reactions such as congestion and edema of nerve roots and ischemia. When walking, the congestion of the obstructed vertebral venous plexus in the spinal canal increases the degree of congestion of nerve roots and the expansion of spinal blood vessels, and also increases the compression of nerve roots. 6, spinal posture changes After lumbar disc herniation about 90% of patients have different degrees of functional scoliosis, most convex to the affected side, a few convex to the healthy side, depending mainly on the relationship between the herniation and the nerve root. Lateral bending relaxes the nerve root and reduces pain. If the protrusion is anterolateral to the nerve root, the spine is convex to the affected side. If the herniation is medial to the nerve root, the spine is convex to the healthy side. Lateral bending is a protective measure to reduce the compression of the nerve root by the protrusion. Lumbar disc herniation is common in young adults, especially in manual workers or those who sit for long periods of time, and there is no significant difference in incidence between men and women. When the above symptoms occur, a lumbar disc herniation can be suspected and should be examined by a doctor as early as possible.