Sciatica is a common type of pain affecting the sciatic nerve, a large nerve extending from the lower back down the back of each leg. Common symptoms of sciatica include:1  Pain in the rear or leg that is worse when sitting. 2  Burning or tingling down the leg. 3  Weakness, numbness, or difficulty moving the leg or foot. 4  A constant pain on one side of the rear. 5  A shooting pain that makes it difficult to stand up.ciatica is a common type of pain affecting the sciatic nerve, a large nerve extending from the lower back down the back of each leg. Common symptoms of sciatica include: