The shoulder is a very complex joint that is crucial to many activities of daily living. Decreased shoulder mobility is a serious clinical finding. A global decrease in shoulder range of motion is called adhesive capsulitis, referring to the actual adherence of the shoulder capsule to the humeral head. Adhesive capsulitis is a syndrome defined as idiopathic restriction of shoulder movement that is usually painful at onset. Secondary causes include alteration of the supporting structures of and around the shoulder, and autoimmune, endocrine or other systemic diseases. The three defined stages of this condition are the painful stage, the adhesive stage and the recovery stage. Although recovery is usually spontaneous, treatment with intra-articular corticosteroids and gentle but persistent physical therapy may provide a better outcome, resulting in little functional compromise.