Shoulder pain is a common condition that affects the shoulder joint and the surrounding muscles, tendons, and ligaments. It can occur due to various reasons, such as injury, overuse, inflammation, or underlying medical conditions. The pain may be mild or severe and can affect one or both shoulders. Often, it leads to restricted movement, stiffness, or discomfort while performing daily activities like lifting, reaching, or even sleeping. Conditions like rotator cuff tears, frozen shoulder, arthritis, or bursitis are among the typical causes.