Does sciatica nerve cause pain on lower leg?

Symptom Vs Cause. Sciatica is the symptom of leg pain caused by a disc herniation or narrowing where the nerve exits the spine. A disc herniation is a outpouching of the disc from its normal place into the spinal canal or on the nerve and can be a source of pain in the back or down the leg . The nerve then goes to the muscle which can then hurt, spasm or feel sore or irritated.
Sciatica. The sciatic nerve is responsible for both the muscle control and sensation in the the legs from the hips on down so any compression or injury to the nerve can lead to symptoms in the legs.