Do your legs tingle, become numb, or feel weak? You may be experiencing Sciatica. The term Sciatica describes leg pain that originates from the lower back and travels through the buttock and down the large sciatic nerve in the back of each leg. Sciatica is not a medical diagnosis in and of itself –it is a symptom of an underlying medical condition. Common lower back problems such as: lumbar herniated disc, degenerative disc disease, and spondylolisthesis can cause sciatica symptoms….