Why Is Piriformis Syndrome Worse At Night. This pain is commonly caused by compression of the piriformis muscle while sitting on a car seat or while running. The sciatic nerve can sometimes be compressed, irritated or entrapped as it runs through the soft tissues of the buttock.
Side sleeping with a pillow between the knees. Piriformis syndrome is such an exhausting chronic condition sleep can feel like the only escape from the daily pain. Piriformis syndrome has any number of causes, including adhesions of the fascia, which are extremely common.