When it comes to length and thickness, the sciatic nerve wins hands down. The sciatic nerve is made up of five nerves in the lumbar region that join together to form a single nerve that travels through the buttocks and down each leg. When the sciatic nerve becomes inflamed, it is referred to as sciatica. A person may experience a pain that starts in the buttocks and travels down the leg. Typically, only one side of your body will be affected by the...