Doctors know the condition as lateral epicondylitis. The rest of us call it “tennis elbow.”
The term has entered wide use, though only a small group of people diagnosed with tennis elbow actually get it from playing tennis. Tennis elbow is a pain focused on the outside of the arm, where your forearm meets your elbow.
Tennis elbow is a common injury that will usually heal with minor treatment, but you have to give it time and rest.