Repetitive Strain Injury (RSI) refers to a range of conditions caused by repetitive motions, often affecting muscles, tendons, and nerves. Commonly seen in individuals who perform tasks like typing or assembly line work, RSI can lead to pain, swelling, and reduced mobility in the affected areas. Prevention strategies include taking regular breaks, using ergonomic equipment, and maintaining proper posture. Early diagnosis and treatment are crucial to managing symptoms and preventing long-term damage. If left untreated, RSI can significantly impact daily activities and overall quality of life.