Causes of lumbar disc herniation: About 1/3 of patients have a history of trauma of varying degrees. Rare forms of trauma include overloading of the lumbar region when bending over to carry heavy objects, lifting or carrying heavy objects before the lumbar muscles are sufficiently kunned, various forms of lumbar sprains, sudden straightening of the lumbar region after a long period of bending over, and falling on the ground with the buttocks. These traumas can cause the disc to rupture and the nucleus pulposus to protrude from the ruptured part when the pressure on the nucleus pulposus exceeds the stress on the annulus fibrosus. In addition, there are some symptoms, which are described below for you. The causes of lumbar disc herniation are: ● Sudden increase in pressure within the lumbar disc: the patient does not have an obvious history of trauma, but is only caused by violent coughing, sneezing, constipation, and forceful breath-holding There are also patients who are caused by cold or moisture. This is because cold or moisture can cause small blood vessel constriction and reflex spasm of the lumbar muscle, which increases the pressure on the intervertebral disc and causes rupture of the fibrous ring. ● Degenerative changes of the lumbar disc: The main cause of degenerative changes of the lumbar disc is temporary chronic cumulative strain injury. Rarely over 30 years of age, the degenerated lumbar disc fibers become degenerative, less elastic, thinner and more brittle, the nucleus pulposus becomes dehydrated and the tension decreases, and on this basis, when there is a certain external force or a sudden increase in disc pressure, the fibrous ring can rupture and the nucleus pulposus protrudes.