Piriformis syndrome is literally a pain in the butt. The sciatic nerve runs underneath the piriformis muscle. When it gets tight and irritated, it often presses on the sciatic nerve causing symptoms of sciatica. See Doctor Jo’s blog post about this at: http://www.askdoctorjo.com/piriformis-syndrome
Sciatica is low back pain that often shoots down one leg. The symptoms actually start in your lumbar spine. Learn about sciatica symptoms so you know how to recognize it in this expert-written article.