Sciatica nerve is a finger size nerve which travels down to the thigh, knee, and toes. It is formed by Lumbar 4, 5 and Sacral 1, 2, 3 nerve roots. If the nerve roots are pinched by a herniated disc, degenerative disc or bone spur, or tumor or inflammation, the pain manifests itself. If you are driving a vehicle or sitting all the time, are overweight, carry heavy objects frequently, you have diabetes, or are a smoker, you are one of the high risk sufferers.
More than 50% of sciatica pain patients may be self-healed. If your pain persists even after rest and cold and heat compressions, you need to see a healthcare provider.