What is Sciatica? Sciatica refers to pain that radiates along the path of the sciatic nerve. The sciatic nerve is the largest and longest nerve in the human body beginning from the lower back through the hips and buttocks and down each leg. The nerve branches out in 2 nerves below the knee. A person having sciatica usually experiences pain and other symptoms down one leg but can be both. Because the sciatic nerve is so long there can be many signs and symptoms in the lower body. Common Signs & Symptoms of Sciatica Lower Back Pain Lower back pain…