Trochanteric bursitis is inflammation of the bursa near the greater trochanter of the femur that causes lateral hip and thigh pain. It is often due to repetitive trauma from prolonged standing with asymmetric posture, running, or stairs. Symptoms include pain with hip movement and muscle contraction. Treatment focuses on reducing inflammation, restricting aggravating activities, stretching tight muscles, and strengthening weak muscles like the glutes and lateral hip rotators through a progressive exercise program.