The difference between pyriformis syndrome and lumbar disc herniation lies in the clinical manifestations, physical examination and so on. 1. Clinical manifestations: pyriformis syndrome is manifested as hip and lower extremity pain, generally no lumbar pain, can be an acute attack, the hip has a deep in the soreness and swelling pain, heavy cut-like, severe pain, pain often spread to the posterior lateral thighs, calves, some of the lower abdomen and perineum pain and discomfort. Lumbar intervertebral disc herniation manifests general lumbago, sciatica with lower limb numbness, etc., the pain is radiating pain, mostly unilateral. 2. Physical examination: pyriformis syndrome manifests positive pyriformis muscle tension test: the examined person lies on the side of the bed, and pain is generated when performing flexion, adduction and internal rotation examination. Positive straight leg raising test for lumbar intervertebral disc herniation: hold the ankle of the examined person, put the other hand on the front of his thigh to keep his knee in the straight position, and then slowly raise his lower limb upward, if he lifts it to a certain height and causes radiating pain in the lower limb, it will be positive. If you have any of the above symptoms, or are diagnosed with pyriformis syndrome or lumbar disc herniation, it is recommended that you go to the hospital in a timely manner and receive standardized treatment under the guidance of your doctor in order to reduce the adverse effects.