Patients with this disease mainly suffer from lower back pain and sciatica, and often have a history of lumbar sprain, lumbar strain or lumbar cold before the onset. This low back pain is aggravated by walking, standing, sitting and other activities, and can be temporarily relieved after bed rest. Pain in one or both lower extremities, radiating pain along the sciatic nerve, along the buttocks to the back or outside of the thigh and the outside and back of the calf to the back of the foot or the sole of the foot. In individual patients, the pain may begin in the lower leg or outer ankle, and in half of the patients, the pain in the lower extremity may be aggravated by coughing and sneezing or by abdominal exertion. For patients with high lumbar disc herniation, the symptoms are mostly manifested in the groin area of the lower abdomen or the anterior medial thigh pain; patients with huge central disc herniation may have abnormal urination and defecation or incontinence; numbness in the saddle area may appear as foot drop in severe cases; some patients with lumbar disc herniation show chills in the lower limbs due to the stimulation of their lumbar sympathetic nerves, and some may also have unilateral or bilateral lower limb edema.