Comedian Russell Brand is famous for his controversial comments and stunts, past struggles with addiction and his short-lived marriage to singer Katy Perry.
The sciatic nerve begins in the lower back, extends through the buttocks and goes down the length of the leg. It is the longest nerve in the body. The pain that occurs when this nerve becomes inflamed or compressed is called sciatica.
The sciatic nerve is the longest nerve in the body, going from the pelvis, through the buttocks, down the legs to the feet. Having a prolapsed disc (also known as a ' slipped disc') in the back is a most common cause of sciatica, but sometimes doctors do not find an obvious cause of the pain.