Piriformis syndrome is usually a neuromuscular ailment when the piriformis muscle mass (a pear-shaped muscle mass from the buttocks) compresses the sciatic nerve (a nerve that extends from the lower spine all of the way all the way down to the foot). This brings about pain from the buttocks and https://www.theorthopaedicandpainpractice.com/lower-back-and-buttock-pain/