Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Numerous human body disorders are now classed as occupational overuse syndrome, including: Common calluses housemaid''s knee or prepatellar bursitis Tennis elbow Repetitive strain injury (RSI) OCCUPATIONAL OVERUSE SYNDROME The condition Occupational Overuse Syndrome is a collective term for a range of conditions, including injury, characterised by discomfort or persistent pain in muscles, tendons and other soft tissues. THE SYMPTOMS It is necessary to distinguish the symptoms of OOS from the normal pains of living, such as muscle soreness after unaccustomed exercise or activity. OOS pains must also be distinguished from the pain of arthritis or some other condition. The early symptoms of OOS include: muscle discomfort fatigue aches and pains soreness hot and cold feelings muscle tightness numbness and tingling stiffness muscle weakness.