There is no such disease as lumbar intervertebral disc strain in medicine, which should refer to lumbar intervertebral disc herniation, and lumbar intervertebral disc herniation is mainly manifested as lumbago, sciatica, cauda equina syndrome and so on. 1. Lumbago: lumbago is the most important manifestation of lumbar disc herniation, and most people will have lumbago, which will be aggravated after prolonged sitting and standing, excessive bending and exertion. 2. Sciatica: Lumbar disc herniation compresses the nerve roots of the sciatic nerve, resulting in radiating pain and numbness in the lower limbs. Coldness and swelling of the lower limbs may also occur. 3. Cauda equina syndrome: If the lumbar disc herniation is serious and causes damage to the cauda equina nerve, it may cause symptoms such as dysfunction in urination and defecation, and male sexual dysfunction. Herniated lumbar intervertebral disc may also have other symptoms, such as muscle atrophy of the lower limbs, etc. If the above symptoms occur, it is recommended to go to the hospital in a timely manner, complete the relevant examinations, and follow the doctor’s instructions to carry out standardized treatment, so as to avoid delaying the condition.