Sciatica symptoms are caused by compression of the sciatic nerve. This nerve is responsible for feeling and movement of various parts of the buttocks and legs. The specific symptoms a person has will depend on which part of the sciatic nerve is actually affected.
Because the sciatic nerve is being compressed, common symptoms of sciatica can include:
If more of the sciatic nerve is compressed, symptoms can become more severe and include numbness or abnormal sensation in the feet and weakness or clumsiness of the lower leg. In extreme cases, these symptoms can include loss of control of bowel or bladder function.