What is Tennis elbow?

Tennis elbow (lateral epicondylitis) is a form of tendonitis affecting the tendons on the outer part of the elbow, caused by repetitive gripping or wrist movements. Despite the name, it's more commonly caused by everyday activities and manual work than by playing tennis.

It causes pain and tenderness on the outside of the elbow, which can worsen with gripping, lifting, or twisting movements, such as shaking hands, turning a doorknob, or lifting a cup.