Definition
A condition where the piriformis muscle (a small muscle deep in the buttock) spasms or tightens, irritating or compressing the sciatic nerve that runs beneath it. It produces sciatica-like symptoms without a spinal cause.
Piriformis Syndrome
conditionPiriformis syndrome is a condition in which the piriformis, a small muscle deep in the buttock, tightens or spasms and irritates the sciatic nerve running beneath it. It causes buttock pain that may spread down the back of the thigh, often worse when sitting. The symptoms resemble sciatica but arise without a spinal cause, so examination helps tell them apart.
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