ennis elbow (lateral epicondylitis) is an overuse condition that causes pain and inflammation on the outer upper arm near the elbow. When the muscles in the arm are overused—from playing a sport like tennis or an activity that requires frequent twisting of the wrist—small tears develop in the tendon that attaches the muscle to the elbow bone. 

Tennis elbow is common in all different types of people. It is not necessarily limited to athletes or those who play tennis. We do not fully understand why some people develop this problem and others do not. The good news is this condition almost always resolves on its own but can take up to 12-18 months to feel better.