Sciatica pain is caused by irritation, inflammation, pinching, or compression of a nerve in the lower back. The most common cause is a herniated or slipped disk that causes pressure on the nerve root. Most people with sciatica get better on their own with time and self-care treatments. Sciatica is nerve pain from an injury or irritation to the sciatic nerve, which originates in your buttock/gluteal area. The sciatic nerve is the longest and thickest (almost finger-width) nerve in the body. For more details please contact us! 7982062043.