Frozen shoulder (adhesive capsulitis) is a condition in which the capsule surrounding the shoulder joint becomes inflamed, thickened, and stiff, resulting in pain and a progressive loss of shoulder movement. The condition typically develops gradually and may interfere with everyday activities such as dressing, reaching overhead, or sleeping comfortably.
Common symptoms include difficulty lifting the arm, reaching behind the back, shoulder stiffness, and persistent pain that often worsens at night. Early diagnosis and an individualized treatment program, which may include physical therapy and other non-surgical treatment options, can help improve shoulder function and quality of life.