Sciatica occurs due to the irritation of the root(s) of the lower lumbar and lumbosacral spine. Other common causes of sciatica include: Muscle spasm in the buttocks or back, Pregnancy, Lumbar spinal stenosis (spinal canal narrows in your lower back), Degenerative disk disease Etc. Get in touch with us now at (770) 212-3991 to get help from our highly qualified and experienced doctors. if you need Woodstock sciatica pain treatment.