Sciatica is a group of symptoms brought on by pressure or irritation on the sciatic nerve, which is the biggest nerve in your body. It is not a disease in and of itself. CA isn’t a condition in itself—it's actually a set of symptoms caused by pressure or irritation on the sciatic nerve, the largest nerve in your body. This nerve runs from the lower back down through the hips and into each leg.

Signs of Sciatica May Include
Leg pain that is severe or burning is often caused by inflammation of the sciatic nerve.
From the lower back, pain is extending down one side of the leg.
Tingling or numbness in the foot or toes
Weakness in the leg muscles
Pain that worsens with long periods of sitting or standing