Tennis elbow, also known as lateral epicondylitis, is a condition characterized by pain and inflammation on the outside of the elbow. It is typically caused by repetitive arm motions, such as those used in tennis or other sports. Symptoms of tennis elbow can include pain, weakness, and difficulty gripping objects. Treatment options for tennis elbow include rest, ice, physical therapy, and the use of braces or splints to support the elbow. In more severe cases, corticosteroid injections or surgery may be necessary. Proper diagnosis and treatment can help alleviate symptoms and promote healing.