Frozen shoulder, medically known as adhesive capsulitis, is a condition characterized by stiffness, pain, and limited range of motion in the shoulder joint. It occurs when the connective tissue surrounding the shoulder joint becomes inflamed and thickened, leading to restricted movement. Treatment focuses on reducing pain, restoring mobility, and preventing further stiffness. Options range from non-invasive therapies to advanced procedures, depending on the severity and the patient's needs.