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Sciatica is a pain caused by compression of the sciatic nerve. Usually it cause a shooting pain which radiates from lower back and then from posterior aspect of leg and downwards.
There are number of bursa around the hip joint and they usually produce a localized pain,swelling and tenderness.It causes a persistent gnawing pain and the character of pain is different from sciatica.
Generally it is easier to differentiate both these conditions on examination. Tenderness and localized swelling usually favor bursitis.
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