Lumbar disc herniation is a common and frequent disease among young adults. When some patients come to my clinic, they say, “I have “lumbar detachment”, referring to this disease. In recent years, this disease has a tendency to become younger. For example, I have met children as young as 13 years old in the clinic with considerable prominence. Many high school students actually have lumbar disc herniation, and more people in their 20s. Overall, it is numbness and pain on the outer and back side of the lower leg below the knee or on the back of the foot, heel, or bottom of the foot (usually a unilateral limb). It is sometimes accompanied by low back pain and discomfort in the hip and buttocks. Specifically, if the lumbar 45 disc is herniated, the symptoms are pain or numbness in the lateral thigh, lateral calf and back of the foot. If the lumbar 5 sacral 1 disc is herniated, the symptoms are pain or numbness in the posterior lateral thigh, posterior lateral calf, heel, and sole of the foot. There is also a certain pattern of symptom changes, sometimes when the herniation is very small or early is just lumbar pain; if the herniation becomes larger and stimulates the compression of nerve roots, leg pain appears (usually in one leg); if the compression is longer, numbness in the corresponding nerve distribution area appears. In this case, it is necessary to find a spinal surgeon for consultation to obtain a definitive diagnosis or to exclude other diseases.