More Causes of Sciatica and Sciatica Type Symptoms. In addition to the most common causes, a number of other conditions can cause sciatica, including Pregnancy. The changes the body goes through during pregnancy, including weight gain, a shift of one’s center of gravity, and hormonal changes, can cause sciatica during pregnancy. Scar .
Common Sciatica Cause Piriformis Syndrome. Piriformis syndrome is named for the piriformis muscle and the pain caused when the muscle irritates the sciatic nerve. The piriformis muscle is located in the lower part of the spine, connects to the thighbone, and assists in hip rotation. The sciatic nerve runs beneath the piriformis muscle..
The sciatic nerve is the largest nerve in the body and begins from nerve roots in the lumbar spinal cord in the low back and extends through the buttock area to send nerve endings down the lower limb. The pain of sciatica .