Elbow tendinopathy, also known as lateral epicondylitis, is a condition caused by overuse of the muscles and tendons around the elbow joint. It is usually associated with repetitive movements of the wrist and arm.
Despite its name, elbow tendinopathy doesn't just occur in tennis players. In fact, many who develop it have never played the sport. Occupations that involve repetitive motions—such as plumbing, painting, carpentry, and construction—increase the risk. However, the cause is often unknown.
The pain usually occurs where tendons — the strong tissues that connect muscles to bones — attach to a bony bump on the outside of the elbow. The pain may spread to the forearm and wrist.
Rest, painkillers, physical therapy, and therapeutic exercise often help relieve symptoms. If these are not effective or symptoms interfere with daily life, an injection or surgery may be needed.

Symptoms
The pain may extend from the outside of the elbow to the forearm and wrist. The pain and weakness can make it difficult to do the following activities:
• Shaking hands or holding objects
• Knob opening
• Holding a cup of coffee

Causes
Elbow tendonitis is often associated with overuse and strain of the forearm muscles, although the exact mechanism is not always clear. Repetitive contractions of the muscles responsible for extending and raising the wrist and hand can cause microscopic tears in the tendon that attaches to the elbow.
Activities that may cause or worsen tendonitis include:
• Playing with a racket, especially with incorrect backhand technique
• Use of plumbing tools
• Painting
• Screwing
• Food cutting, especially meat
• Extensive use of a computer mouse
In rare cases, tendinopathy can be caused by injury or a connective tissue problem. Often, the cause remains unknown.