Whether lumbar 5 sacral 1 herniation is serious or not is mainly based on the degree of herniation, herniation that does not cause obvious compression of nerve tissue is generally not serious; if the herniation is obvious, or even causes segmental spinal stenosis, which causes compression of nerve roots, spinal cord, and other nerves, then the herniation is relatively more serious. Some people with lumbar 5 sacral 1 herniation usually have no obvious discomfort symptoms, or only lumbar pain and discomfort, in the imaging examination found to exist in the lumbar 5 sacral 1 intervertebral discs slightly protruding, and did not cause compression of the nerve tissues, the case is not serious, but if you do not pay attention to the usual, may gradually aggravate, and then nerve compression symptoms, the condition is aggravated. For lumbar 5 sacral 1 intervertebral disc tissue herniation is more obvious, the nerve root in the spinal canal, the spinal cord and other nerve tissues cause obvious compression, can be manifested as lumbar pain, lower limb pain and numbness, as well as abnormal urination and defecation, such as cauda equina compression, and some even cause segmental spinal canal stenosis, usually is relatively serious. It is recommended to go to the hospital to improve the relevant auxiliary examination and physical examination, and be evaluated by a professional physician to determine the severity of the condition.