Acupuncture for Frozen Shoulder Acupuncture for Specific Conditions Naturally relieve pain, stiffness and inflammation Frozen shoulder, also known as adhesive capsulitis (AC), is a common inflammatory musculoskeletal condition that causes pain and stiffness in the shoulder joint. The pain is often intense (especially at night), making it difficult to move your arm and shoulder. This loss of motion can be debilitating and affect your quality of life. Frozen shoulder is a chronic condition that can last for several years and is usually treated with pain medication, anti-inflammatory drugs and steroid injections. Learn how acupuncture for frozen shoulder works and how it can naturally relieve pain, stiffness and inflammation. Causes of frozen shoulder Frozen shoulder is caused by inflammation around the capsule of connective tissue that holds the joint together. When the tissue becomes inflamed, it tightens and thickens around the joint, triggering pain and reducing range of motion.