What is the general term for a condition caused by overstretching or overuse of a muscle or tendon?

The term that describes a condition resulting from the overstretching or excessive use of a muscle or tendon is "strain." Strains occur when the muscle fibers or tendons are stretched beyond their normal capacity, leading to microscopic tears. This situation often arises in sports or activities that require sudden movements, heavy lifting, or repetitive actions.

Understanding the nature of strains is crucial for athletic training and rehabilitation since they typically present with symptoms like pain, swelling, and limited range of motion in the affected area. Recognizing strains also helps in determining appropriate rest, recovery, and preventive strategies to avoid further injury.