What is piriformis syndrome?
Piriformis syndrome is a rare condition characterized by pain, instability, tingling and numbness in the lower back, buttocks, lower thighs and the calves. It arises due to the irritation or compression of the sciatic nerve by the piriformis muscle during running or sitting. The longest and widest nerve of the body, the sciatic nerve is prone to a number of conditions that can lead to pain, numbness and tingling along its path.
Piriformis syndrome is just one of these conditions that affects the sciatic nerve along its pat to the lower leg. The symptoms may be experienced along the entire course of the the sciatic nerve or in specific areas supplied by this nerve like the skin of the leg, the muscles of the thigh, leg and foot on the back side.