Lumbar 5 sacral 1 disc herniation is not serious. There are 3 types of lumbar disc herniation, from mild to severe: lumbar disc bulge, lumbar disc herniation, and lumbar disc prolapse. Lumbar 5 sacral 1 disc herniation is one of the mildest types of lumbar disc herniation, which is also known as lumbar disc bulge. Lumbar bulging discs cause the mildest clinical symptoms and only result in low back pain and mild sciatica. However, there is no decrease in muscle strength in the limbs, and there is no abnormal sensation or weakening of reflexes in the limbs, so lumbar 5 sacral 1 herniated disc is not serious.