Are you suffering from sciatica? Know all about it here and find how to reduce your pain. Sciatica is defined as the pain caused in the lower extremity resulting from irritation of the sciatic nerve. The pain of sciatica is felt from the low back that is the lumbar area to behind the thigh and can radiate down below the knee. The root cause of this pain is irritation of sciatic nerve, which is the largest nerve in body. It begins from nerve roots in the lumbar spinal cord in the low back and extends through the buttock area to send nerve endings down the lower limb. 1.      Causes While sciatica is most commonly a result of a lumbar disc herniation directly pressing on the nerve, any cause of irritation or inflammation of the sciatic nerve can produce the symptoms of sciatica. This irritation of nerves because of an abnormal [...]