Frozen shoulder, known as adhesive capsulitis, results in the loss of passive and active motion of the shoulder socket (glenohumeral joint). The loss of motion is due to chronic inflammation that leads to the stiffening of the soft connective tissue around the shoulder. A frozen shoulder with no known cause is labeled “primary”, but a “secondary” frozen shoulder (secondary adhesive capsulitis) can result after surgical procedures or trauma to the shoulder. A frozen shoulder has several stages from pain with motion, loss of motion and pain at night, and then significant stiffness with minimal night pain. Anti-inflammatory drugs (like aspirin or ibuprofen) and corticosteroid injections can help treat the inflammation and pain associated with the beginning phases of a frozen shoulder. Aggressive therapy and movements to regain full range of motion with the shoulder will help relieve the stiffness.