What causes numbness in the buttocks due to lumbar disc herniation?

Main causes of buttock numbness due to lumbar disc herniation: 1. Compression of the sciatic nerve: When the lumbar intervertebral disc protrudes backward, it may compress the adjacent sciatic nerve, which is the primary cause of buttock numbness. The sciatic nerve is a major nerve connecting the spinal cord to the lower limbs, responsible for transmitting sensory and motor signals. 2. Impaired blood circulation: Lumbar disc herniation may also affect local blood flow, leading to nerve ischemia and hypoxia, thereby causing numbness. 3. Nerve inflammation: Prolonged nerve compression can lead to nerve inflammation, further exacerbating the sensation of numbness. If symptoms persist or become severe, prompt medical attention is recommended to prevent worsening of the condition.