Bursitis is the inflammation of the bursa causing stiffness and pain around the hip joint. There are two major bursae of the hip, the trochanteric bursa and the ischial bursa.
Bursitis is most commonly caused by inflammation resulting from soft tissue trauma or by a strain type injury.
Trochanteric bursitis causes tenderness of the outer hip and makes it difficult to lie down on the involved side. It also causes a dull, burning pain on the outer hip that gets worse with walking and stair climbing. Ischial bursitis is located in the upper buttock area and can cause dull pain that is most noticeable when climbing uphill. The pain sometimes occurs after prolonged sitting on hard surfaces.