The early symptoms of lumbar disc herniation mainly include back pain and limited mobility. With appropriate conservative treatment at this stage, the symptoms will not worsen. For example, sleeping on a hard bed, resting adequately, and using some physical therapy methods can help alleviate back pain and restricted mobility. If back pain and mobility limitations occur and are not treated correctly, it may lead to mid-to-late-stage symptoms. The patient will typically experience sciatica, with radiating pain and numbness in both lower limbs, caused by the herniated disc compressing the nerve root, leading to impaired nerve function and symptoms of numbness and pain in the lower limbs.