Piriformis syndrome occurs when the piriformis muscle spasms and irritates or compresses the sciatic nerve. It often causes symptoms similar to sciatica, though it is not caused by a spinal problem like sciatica is. If you are having sciatica symptoms, application of massage to the piriformis muscle may help relieve them. Learn more about piriformis syndrome here: https://www.spine-health.com/video/piriformis-syndrome-video