In shoulder OA, pain often worsens with activity ... Bursitis is inflammation of small, fluid-filled sacs (bursae) that cushion and lubricate large joints, such as the knees, hips and shoulders. The ...

Bursitis—Bursitis occurs when your shoulder’s bursae become irritated. Tendinitis—Tendinitis occurs when the tendons of the rotator cuff become irritated. The progressive inflaming of the rotator cuff ...