Your sciatic nerve is your body’s longest nerve, running from your spinal cord down to each leg. Sciatica is a sensation that refers to pain, numbness, tingling, or weakness along the nerve (your hips, buttocks, legs).
Sciatica is a symptom (not a condition by itself) of pressure on the nerve is typically caused by herniated lumbar disc, narrowing of the spine (spinal stenosis), spondylolisthesis, among others. Pregnancy is also another common cause for sciatica.